Pub Date : 2022-07-08DOI: 10.4257/oeco.2022.2602.10
V. Fernandes, Danilo Camargo-Santos, Stéfano Zorzal-Almeida
O estado do Espírito Santo (Brasil) tem sido pouco explorado em termos de microalgas e cianobactérias de ambientes aquáticos continentais, apesar de possuir doze bacias hidrográficas, tendo a maior contribuição, em termos de volume de água da bacia do rio Doce. Este fato é resultado do baixo número de pesquisadores e instituições com pesquisas ecológicas e taxômicas. As primeiras investigações limnológicas com microalgas e cianobactérias ocorreram na década de 90, tendo avanço considerável em lagoas costeiras, lagos, rios e represas a partir da década de 2000, tanto com fitoplanctôn quanto com o perifíton, devido ao incremento de pesquisadores e editais de pesquisa. Este estudo cienciométrico visou identificar tendências das pesquisas já realizadas, apontando os ecossistemas aquáticos mais estudados e os autores dos artigos. Os resultados evidenciaram que a maioria dos estudos se concentrou na ecologia das comunidades, com listas de táxons; raros foram os estudos taxonômicos; poucos foram os trabalhos experimentais para compreensão de fatores reguladores das comunidades. Inúmeras lacunas precisam ser preenchidas, especialmente no que tange ao: levantamento da biodiversidade nas diferentes regiões do estado, com ênfase em taxonomia; desenvolvimento de pesquisas experimentais para compreensão de fatores reguladores das comunidades; estudos preditivos frente a impactos ambientais; uso destas comunidades como bioindicadores de impactos ambientais; estudos biotecnológicos com microalgas; pesquisas que abordem impactos na saúde pública relacionados, principalmente, com as florações de cianobactérias potencialmente tóxicas; realização de testes de hipóteses ecológicas. Há também a necessidade e relevância de publicações em revistas internacionais de maior impacto e com colaboradores nacionais e internacionais e o estabelecimento de parcerias com instituições externas ao Espírito Santo e ao Brasil. Os novos direcionamentos favorecerão o incremento do conhecimento das comunidades fitoplanctônica e perifítica nos ecossistemas aquáticos continentais do Espírito Santo e fornecerão subsídios para a tomada de medidas de recuperação e/ou preservação. CONTINENTAL MICROALGAE AND CYANOBACTERIA IN ESPÍRITO SANTO STATE: PAST, PRESENT AND FUTURE: The Espírito Santo State (Brazil) has been little explored in terms of microalgae and cyanobacteria from inland waters, despite its twelve hydrographic basins and being the greatest contribution in water volume of the Doce river basin. This fact is the result of the low number of researchers and institutions with research lines about freshwater ecology and microalgae taxonomy. Literature records indicate that the early limnological researches that studied microalgae were published in the 1990s, with a considerable increase in studies in coastal lagoons, lakes, rivers, and dams from the 2000s onwards, about phytoplankton and periphyton, due to the increase in the number of researchers and more research notices. The present sc
{"title":"MICROALGAS E CIANOBACTÉRIAS CONTINENTAIS NO ESTADO DO ESPÍRITO SANTO: PASSADO, PRESENTE E FUTURO","authors":"V. Fernandes, Danilo Camargo-Santos, Stéfano Zorzal-Almeida","doi":"10.4257/oeco.2022.2602.10","DOIUrl":"https://doi.org/10.4257/oeco.2022.2602.10","url":null,"abstract":"O estado do Espírito Santo (Brasil) tem sido pouco explorado em termos de microalgas e cianobactérias de ambientes aquáticos continentais, apesar de possuir doze bacias hidrográficas, tendo a maior contribuição, em termos de volume de água da bacia do rio Doce. Este fato é resultado do baixo número de pesquisadores e instituições com pesquisas ecológicas e taxômicas. As primeiras investigações limnológicas com microalgas e cianobactérias ocorreram na década de 90, tendo avanço considerável em lagoas costeiras, lagos, rios e represas a partir da década de 2000, tanto com fitoplanctôn quanto com o perifíton, devido ao incremento de pesquisadores e editais de pesquisa. Este estudo cienciométrico visou identificar tendências das pesquisas já realizadas, apontando os ecossistemas aquáticos mais estudados e os autores dos artigos. Os resultados evidenciaram que a maioria dos estudos se concentrou na ecologia das comunidades, com listas de táxons; raros foram os estudos taxonômicos; poucos foram os trabalhos experimentais para compreensão de fatores reguladores das comunidades. Inúmeras lacunas precisam ser preenchidas, especialmente no que tange ao: levantamento da biodiversidade nas diferentes regiões do estado, com ênfase em taxonomia; desenvolvimento de pesquisas experimentais para compreensão de fatores reguladores das comunidades; estudos preditivos frente a impactos ambientais; uso destas comunidades como bioindicadores de impactos ambientais; estudos biotecnológicos com microalgas; pesquisas que abordem impactos na saúde pública relacionados, principalmente, com as florações de cianobactérias potencialmente tóxicas; realização de testes de hipóteses ecológicas. Há também a necessidade e relevância de publicações em revistas internacionais de maior impacto e com colaboradores nacionais e internacionais e o estabelecimento de parcerias com instituições externas ao Espírito Santo e ao Brasil. Os novos direcionamentos favorecerão o incremento do conhecimento das comunidades fitoplanctônica e perifítica nos ecossistemas aquáticos continentais do Espírito Santo e fornecerão subsídios para a tomada de medidas de recuperação e/ou preservação. CONTINENTAL MICROALGAE AND CYANOBACTERIA IN ESPÍRITO SANTO STATE: PAST, PRESENT AND FUTURE: The Espírito Santo State (Brazil) has been little explored in terms of microalgae and cyanobacteria from inland waters, despite its twelve hydrographic basins and being the greatest contribution in water volume of the Doce river basin. This fact is the result of the low number of researchers and institutions with research lines about freshwater ecology and microalgae taxonomy. Literature records indicate that the early limnological researches that studied microalgae were published in the 1990s, with a considerable increase in studies in coastal lagoons, lakes, rivers, and dams from the 2000s onwards, about phytoplankton and periphyton, due to the increase in the number of researchers and more research notices. The present sc","PeriodicalId":39092,"journal":{"name":"Oecologia Australis","volume":"211 ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41253210","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-07-08DOI: 10.4257/oeco.2022.2602.23
M. Suzuki
The 1993 inauguration of UENF (Universidade Estadual do Norte Fluminense Darcy Ribeiro) has made research on aquatic ecosystems in the northern region of Rio de Janeiro State a reality, most notably that pertaining to the lower Paraíba do Sul River (PSR) and associated ecosystems (e.g. mangroves, coastal lagoons and coastal zone). These researches were, in part, leveraged by the scientific training provided by Dr Francisco Esteves. Within the municipality of Campos dos Goytacazes, the PSR has been monitored with biweekly samplings since 1994 by UENF in a long-term project highlighting the river’s role in supplying water for 90% of the municipality’s population. However, potamological conditions such as low outflow and eutrophication have fostered episodic cyanobacterial blooms, especially during the dry season. One such event caused water supply interruptions in the municipalities located in the lower PSR basin, a fact that highlights the importance of pluriannual monitoring of its hydrochemical conditions.
1993年UENF（Universidade Estadial do Norte Fluminense Darcy Ribeiro）的成立使里约热内卢州北部地区的水生生态系统研究成为现实，尤其是与南帕拉伊巴河下游（PSR）和相关生态系统（如红树林、沿海泻湖和海岸带）有关的研究。这些研究在一定程度上得益于弗朗西斯科·埃斯特维斯博士提供的科学培训。在Campos dos Goytacazes市，自1994年以来，UENF在一个长期项目中通过每两周一次的采样来监测PSR，该项目强调了该河在为该市90%的人口供水方面的作用。然而，低流出量和富营养化等水文条件助长了蓝藻的间歇性繁殖，尤其是在旱季。其中一次事件导致位于PSR下游流域的市政当局供水中断，这一事实突显了多年监测其水化学条件的重要性。
{"title":"A LITTLE ABOUT THE SCIENCE OF THE INLAND WATERS IN THE NORTHERN OF RIO DE JANEIRO STATE: CYANOBACTERIAL BLOOMS IN THE LOWER PARAÍBA DO SUL RIVER","authors":"M. Suzuki","doi":"10.4257/oeco.2022.2602.23","DOIUrl":"https://doi.org/10.4257/oeco.2022.2602.23","url":null,"abstract":"The 1993 inauguration of UENF (Universidade Estadual do Norte Fluminense Darcy Ribeiro) has made research on aquatic ecosystems in the northern region of Rio de Janeiro State a reality, most notably that pertaining to the lower Paraíba do Sul River (PSR) and associated ecosystems (e.g. mangroves, coastal lagoons and coastal zone). These researches were, in part, leveraged by the scientific training provided by Dr Francisco Esteves. Within the municipality of Campos dos Goytacazes, the PSR has been monitored with biweekly samplings since 1994 by UENF in a long-term project highlighting the river’s role in supplying water for 90% of the municipality’s population. However, potamological conditions such as low outflow and eutrophication have fostered episodic cyanobacterial blooms, especially during the dry season. One such event caused water supply interruptions in the municipalities located in the lower PSR basin, a fact that highlights the importance of pluriannual monitoring of its hydrochemical conditions.","PeriodicalId":39092,"journal":{"name":"Oecologia Australis","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49492965","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-07-08DOI: 10.4257/oeco.2022.2602.09
V. Huszar, Caio Graco-Roza, J. Nabout, Patrícia Nunes, E. Ribeiro, S. Melo, S. Cardoso, Uanderson J. Pereira, Marcos Paulo Figueiredo Barros, R. Bozelli, F. Roland, L. Silva, F. Esteves
Tailings from bauxite mining in Porto Trombetas (Pará state, Central Amazonia, Brazil) was discharged (1979–1989) into Batata Lake affecting about 30% of its area. The lake belongs to a clear-water flood-plain system along the Trombetas River, a tributary of the Amazon River. Siltation is the main perceived factor impacting aquatic and flooded communities. Besides natural regeneration, a program to restore a section of igapó forest in the impacted area (IA) has been conducted since 1991. Decreased light is the main factor reducing total phytoplankton biomass (PhyBM) in IA. We hypothesized that PhyBM in IA increases over time because of the improvement of the underwater light conditions due to the natural regeneration and restoration. We sampled quarterly PhyBM and limnological variables (depth, transparency, temperature, pH, conductivity, dissolved oxygen, turbidity, suspended solids, total Kjeldahl nitrogen, and total phosphorus), over 15 years (2005–2019) at eight sampling sites in the two areas (N = 349). We also obtained daily climatic and hydrologic data. PhyBM was higher in NIA than in IA. The temporal trend in the annual mean of PhyBM increased significantly over time only in the IA, approximating the NIA values, confirming our general hypothesis. The increase of PhyBM in the IA was negatively related to the residual light attenuation caused by non-phytoplankton turbidity and to total phosphorus, and positively to air temperature and site depth (p < 0.05; Marginal r2 = 0.18; Conditional r2 = 0.29). Instead, in NIA, PhyBM was explained only by the increase in air temperature (p < 0.05; Marginal r2 = 0.15; Conditional r2 = 0.34). We concluded that the PhyBM in the IA positively responds to the synergy between increasing light availability, air temperature, and site depth, and decreasing total phosphorus concentrations, regardless of hydrologic phase.
Porto Trombetas（巴西中亚马逊州帕拉州）铝土矿开采的尾矿（1979年至1989年）排入巴塔塔湖，影响了约30%的面积。该湖属于亚马逊河支流特隆贝塔斯河沿岸的清水泛滥平原系统。泥沙淤积是影响水生和洪水社区的主要因素。除了自然再生外，自1991年以来，还实施了一项计划，以恢复受影响地区（IA）的一段igapó森林。光照减少是IA中浮游植物总生物量（PhyBM）减少的主要因素。我们假设IA中的PhyBM随着时间的推移而增加，因为自然再生和恢复改善了水下光照条件。我们在这两个地区的八个采样点（N=349）对15年（2005-2019）的PhyBM和湖沼学变量（深度、透明度、温度、pH、电导率、溶解氧、浊度、悬浮固体、总凯氏氮和总磷）进行了季度采样。我们还获得了每日的气候和水文数据。NIA中的PhyBM高于IA。PhyBM年平均值的时间趋势仅在IA中随时间显著增加，接近NIA值，证实了我们的一般假设。IA中PhyBM的增加与非浮游植物浊度和总磷引起的残余光衰减呈负相关，与气温和场地深度呈正相关（p<0.05；边际r2=0.18；条件r2=0.29）。相反，在NIA中，PhyBM仅通过空气温度的升高来解释（p<0.05；边际r2=0.15；条件r2=0.34）。我们得出结论，无论水文阶段如何，IA中的PhyBM都对增加光照可用性、空气温度和场地深度以及降低总磷浓度之间的协同作用做出了积极响应。
{"title":"PHYTOPLANKTON BIOMASS INCREASES IN A SILT-IMPACTED AREA IN AN AMAZONIAN FLOOD-PLAIN LAKE OVER 15 YEARS","authors":"V. Huszar, Caio Graco-Roza, J. Nabout, Patrícia Nunes, E. Ribeiro, S. Melo, S. Cardoso, Uanderson J. Pereira, Marcos Paulo Figueiredo Barros, R. Bozelli, F. Roland, L. Silva, F. Esteves","doi":"10.4257/oeco.2022.2602.09","DOIUrl":"https://doi.org/10.4257/oeco.2022.2602.09","url":null,"abstract":"Tailings from bauxite mining in Porto Trombetas (Pará state, Central Amazonia, Brazil) was discharged (1979–1989) into Batata Lake affecting about 30% of its area. The lake belongs to a clear-water flood-plain system along the Trombetas River, a tributary of the Amazon River. Siltation is the main perceived factor impacting aquatic and flooded communities. Besides natural regeneration, a program to restore a section of igapó forest in the impacted area (IA) has been conducted since 1991. Decreased light is the main factor reducing total phytoplankton biomass (PhyBM) in IA. We hypothesized that PhyBM in IA increases over time because of the improvement of the underwater light conditions due to the natural regeneration and restoration. We sampled quarterly PhyBM and limnological variables (depth, transparency, temperature, pH, conductivity, dissolved oxygen, turbidity, suspended solids, total Kjeldahl nitrogen, and total phosphorus), over 15 years (2005–2019) at eight sampling sites in the two areas (N = 349). We also obtained daily climatic and hydrologic data. PhyBM was higher in NIA than in IA. The temporal trend in the annual mean of PhyBM increased significantly over time only in the IA, approximating the NIA values, confirming our general hypothesis. The increase of PhyBM in the IA was negatively related to the residual light attenuation caused by non-phytoplankton turbidity and to total phosphorus, and positively to air temperature and site depth (p < 0.05; Marginal r2 = 0.18; Conditional r2 = 0.29). Instead, in NIA, PhyBM was explained only by the increase in air temperature (p < 0.05; Marginal r2 = 0.15; Conditional r2 = 0.34). We concluded that the PhyBM in the IA positively responds to the synergy between increasing light availability, air temperature, and site depth, and decreasing total phosphorus concentrations, regardless of hydrologic phase.","PeriodicalId":39092,"journal":{"name":"Oecologia Australis","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47055654","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-07-08DOI: 10.4257/oeco.2022.2602.11
Gilberto Muniz-Junior, B. R. Figueiredo, A. Gripp, Adriano Caliman, L. Carneiro, R. D. Guariento
Studies of population stability in shallow lakes are yet to explain how fishless ponds, with high algae productivity, can have stable zooplankton-algae populations throughout the year. These studies have traditionally overlooked the role of benthic-pelagic coupling, a phenomenon that has noticeable effects on population stability in aquatic environments. We analyzed a simple model to show that benthic-pelagic habitat coupling can explain discrepancies between the behavior of classical predator-prey models and the patterns observed in natural aquatic systems. We used a Lotka-Volterra type model of zooplankton and algae, explicitly modeled as phytoplankton and periphyton. Zooplankton could eat in both algal compartments, presenting a multi-chain omnivore configuration, whereas phytoplankton and periphyton engage in exploitative competition as system support capacity increases. We also modeled the algal exchange among compartments. Our model results show that (1) zooplankton—algae systems tend to be stable up to high nutrient values at intermediate degrees of omnivory, that (2) algae exchange among compartments may dampen stability and that (3) exploratory competition between phytoplankton and the periphyton can also decrease stability. The model results are supported by empirical results available in the literature. Despite the limitations of the modeling approach, our results emphasize the role of habitat coupling and contribute to deepening the understanding of the processes and mechanisms capable of promoting the stability of population dynamics in shallow lakes
{"title":"THE ROLE OF HABITAT COUPLING BY ZOOPLANKTON DRIVING POPULATION DYNAMICS AND STABILITY IN SHALLOW LAKES","authors":"Gilberto Muniz-Junior, B. R. Figueiredo, A. Gripp, Adriano Caliman, L. Carneiro, R. D. Guariento","doi":"10.4257/oeco.2022.2602.11","DOIUrl":"https://doi.org/10.4257/oeco.2022.2602.11","url":null,"abstract":"Studies of population stability in shallow lakes are yet to explain how fishless ponds, with high algae productivity, can have stable zooplankton-algae populations throughout the year. These studies have traditionally overlooked the role of benthic-pelagic coupling, a phenomenon that has noticeable effects on population stability in aquatic environments. We analyzed a simple model to show that benthic-pelagic habitat coupling can explain discrepancies between the behavior of classical predator-prey models and the patterns observed in natural aquatic systems. We used a Lotka-Volterra type model of zooplankton and algae, explicitly modeled as phytoplankton and periphyton. Zooplankton could eat in both algal compartments, presenting a multi-chain omnivore configuration, whereas phytoplankton and periphyton engage in exploitative competition as system support capacity increases. We also modeled the algal exchange among compartments. Our model results show that (1) zooplankton—algae systems tend to be stable up to high nutrient values at intermediate degrees of omnivory, that (2) algae exchange among compartments may dampen stability and that (3) exploratory competition between phytoplankton and the periphyton can also decrease stability. The model results are supported by empirical results available in the literature. Despite the limitations of the modeling approach, our results emphasize the role of habitat coupling and contribute to deepening the understanding of the processes and mechanisms capable of promoting the stability of population dynamics in shallow lakes","PeriodicalId":39092,"journal":{"name":"Oecologia Australis","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48472550","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-03-16DOI: 10.4257/oeco.2022.2601.04
Y. Ayala-Sulca, Reynán Cóndor-Alarcón, Percy Colos-Galindo, Jorge Arenas-Terrel, Carlos Huayhua-Lobatón, Antonio Jeri-Chávez, Carlos Carrasco-Badajoz, J. Iannacone
The larval stage of culicid mosquitoes are the main food resource of notonectides in aquatic systems. Prey alternation and abundance can significantly affect predator-prey interaction and functional response (FR). We evaluated the effect of predation and prey selectivity of Notonecta peruviana in fourth-stage larvae (F1) of Aedes aegypti and Culex quinquefasciatus at different densities and two test systems: one prey and the combination of both (ratio 1: 1). We used the FR protocol to measure predation and the Manly preference index () to evaluate the selectivity of prey, in a CRD experimental design. N. peruviana generated type II RF (“concave model”) of greater impact in larvae of Ae. aegypti (p ≤ 0.01). Predation capacity was similar in both of the prey, 17 ± 4 larvae / day in Cx. quinquefasciatus and 21 ± 4 in Ae. aegypti. The attack coefficient (a), turned out to be similar for both prey species in both test systems and the handling time (Th) was lower for Ae. aegypti than for Culex. Notonecta peruviana demonstrated selectivity for larvae of Ae. aegypti especially at the highest densities (≥ 0.5), attributed to the inefficient anti depredation response, active mobility and smaller size compared to those of Cx. quinquefasciatus. The FR demonstrated the success of N. peruviana in the larval control of culicid mosquitoes, prioritizing the type of prey; thus, promoting the need for its applicability in the field.
{"title":"PREDATORY EFFECT AND SELECTIVITY OF PREY OF NOTONECTA PERUVIANA (HEMIPTERA: NOTONECTIDAE) ON THE LARVAL CONTROL OF MOSQUITOES (DIPTERA: CULICIDAE)","authors":"Y. Ayala-Sulca, Reynán Cóndor-Alarcón, Percy Colos-Galindo, Jorge Arenas-Terrel, Carlos Huayhua-Lobatón, Antonio Jeri-Chávez, Carlos Carrasco-Badajoz, J. Iannacone","doi":"10.4257/oeco.2022.2601.04","DOIUrl":"https://doi.org/10.4257/oeco.2022.2601.04","url":null,"abstract":"The larval stage of culicid mosquitoes are the main food resource of notonectides in aquatic systems. Prey alternation and abundance can significantly affect predator-prey interaction and functional response (FR). We evaluated the effect of predation and prey selectivity of Notonecta peruviana in fourth-stage larvae (F1) of Aedes aegypti and Culex quinquefasciatus at different densities and two test systems: one prey and the combination of both (ratio 1: 1). We used the FR protocol to measure predation and the Manly preference index () to evaluate the selectivity of prey, in a CRD experimental design. N. peruviana generated type II RF (“concave model”) of greater impact in larvae of Ae. aegypti (p ≤ 0.01). Predation capacity was similar in both of the prey, 17 ± 4 larvae / day in Cx. quinquefasciatus and 21 ± 4 in Ae. aegypti. The attack coefficient (a), turned out to be similar for both prey species in both test systems and the handling time (Th) was lower for Ae. aegypti than for Culex. Notonecta peruviana demonstrated selectivity for larvae of Ae. aegypti especially at the highest densities (≥ 0.5), attributed to the inefficient anti depredation response, active mobility and smaller size compared to those of Cx. quinquefasciatus. The FR demonstrated the success of N. peruviana in the larval control of culicid mosquitoes, prioritizing the type of prey; thus, promoting the need for its applicability in the field.","PeriodicalId":39092,"journal":{"name":"Oecologia Australis","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-03-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42258541","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-03-16DOI: 10.4257/oeco.2022.2601.10
I. Aximoff, R. Oliveira, Dione Sales, A. C. Freitas
Habitat degradation and alien species are among the greatest threats to mammals. The degradation of the Atlantic Forest remnants makes it essential to carry out mammal inventories. In this sense, the species richness and the relative frequency of medium and large mammals was evaluated based on active search (192 hours) and camera traps (345 trap-nights). The study was conducted from July 2019 to June 2020, in the Várzeas do Rio Ivinhema State Park - VRISP, Mato Grosso do Sul State - MS. A total of 30 native species were found, representing 62% of mammals in MS, in addition to three invasive alien species. Our survey added sixteen new occurrences to the VRISP. The occurrence of Leopardus braccatus is the first record for the Atlantic Forest biome. Our study contributes to conservation measures proposed by VRISP, which plays a fundamental role in wildlife conservation in the Rio Paraná biodiversity corridor.
栖息地退化和外来物种是哺乳动物面临的最大威胁。大西洋森林遗迹的退化使得进行哺乳动物普查变得至关重要。从这个意义上说，中型和大型哺乳动物的物种丰富度和相对频率是基于主动搜索（192小时）和相机陷阱（345个陷阱夜）进行评估的。这项研究于2019年7月至2020年6月在南马托格罗索州的Várzeas do Rio Ivinhema州立公园进行。除三种入侵外来物种外，共发现30种本土物种，占MS哺乳动物的62%。我们的调查为VRISP增加了16个新事件。braccatus豹的出现是大西洋森林生物群落的第一个记录。我们的研究有助于VRISP提出的保护措施，该措施在里约-巴拉那生物多样性走廊的野生动物保护中发挥着重要作用。
{"title":"MEDIUM TO LARGE SIZED MAMMALS IN VÁRZEAS DO RIO IVINHEMA STATE PARK, MATO GROSSO DO SUL, CENTRAL-WESTERN BRAZIL","authors":"I. Aximoff, R. Oliveira, Dione Sales, A. C. Freitas","doi":"10.4257/oeco.2022.2601.10","DOIUrl":"https://doi.org/10.4257/oeco.2022.2601.10","url":null,"abstract":"Habitat degradation and alien species are among the greatest threats to mammals. The degradation of the Atlantic Forest remnants makes it essential to carry out mammal inventories. In this sense, the species richness and the relative frequency of medium and large mammals was evaluated based on active search (192 hours) and camera traps (345 trap-nights). The study was conducted from July 2019 to June 2020, in the Várzeas do Rio Ivinhema State Park - VRISP, Mato Grosso do Sul State - MS. A total of 30 native species were found, representing 62% of mammals in MS, in addition to three invasive alien species. Our survey added sixteen new occurrences to the VRISP. The occurrence of Leopardus braccatus is the first record for the Atlantic Forest biome. Our study contributes to conservation measures proposed by VRISP, which plays a fundamental role in wildlife conservation in the Rio Paraná biodiversity corridor.","PeriodicalId":39092,"journal":{"name":"Oecologia Australis","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-03-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42685667","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-03-16DOI: 10.4257/oeco.2022.2601.05
Williams Oliveira-Silva, Arthur Siqueira de Paula, Hugo Fernando de Lima, Matheus Galindo Jácome de Carvalho, Renato Gaban-Lima, R. M. D. Lyra-Neves, W. R. Telino-Junior
The Brejos de Altitude are enclaves of high-altitude Atlantic Forest surrounded by the Caatinga, presenting high species richness and endemism. Therefore, this study aimed to characterize the avifauna in forest remnants of the Brejos de Altitude in the state of Pernambuco: the Vale do Tabocas Farm and the RPPN Reserva Natural Brejo. Using mist-nets captures and direct observations, we recorded 211 species of birds, including 28% forest-dependent species. Four taxa endemic to the Pernambuco Center, two to the Atlantic Forest, six to the Caatinga, and 14 to the northeastern region were recorded. Eight threatened taxa were also recorded. Insectivores (44%) and omnivores (25%) were the most representative trophic guilds. Although the Vale do Tabocas fragment presented the lowest species richness, it holds more endangered and endemic species. These results indicate the importance of these forest fragments for local bird diversity maintenance and their conservation must be encouraged.
Brejos de Altitude是被Caatinga包围的高海拔大西洋森林飞地，具有很高的物种丰富度和特有性。因此，本研究旨在描述伯南布哥州布雷霍斯高原森林遗迹中的鸟类:Vale do Tabocas农场和RPPN自然布雷霍保护区。通过雾网捕获和直接观测，我们记录了211种鸟类，其中森林依赖物种占28%。记录到伯南布哥中心特有的分类群4个，大西洋森林特有的分类群2个，卡廷加特有的分类群6个，东北地区特有的分类群14个。8个濒危分类群也被记录下来。食虫动物(44%)和杂食动物(25%)是最具代表性的营养行会。虽然Vale do Tabocas片段的物种丰富度最低，但它拥有更多的濒危和特有物种。这些结果表明，这些森林碎片对当地鸟类多样性的维护和保护具有重要意义。
{"title":"AVIFAUNA IN TWO REMNANTS OF BREJOS DE ALTITUDE IN THE STATE OF PERNAMBUCO, BRAZIL","authors":"Williams Oliveira-Silva, Arthur Siqueira de Paula, Hugo Fernando de Lima, Matheus Galindo Jácome de Carvalho, Renato Gaban-Lima, R. M. D. Lyra-Neves, W. R. Telino-Junior","doi":"10.4257/oeco.2022.2601.05","DOIUrl":"https://doi.org/10.4257/oeco.2022.2601.05","url":null,"abstract":"The Brejos de Altitude are enclaves of high-altitude Atlantic Forest surrounded by the Caatinga, presenting high species richness and endemism. Therefore, this study aimed to characterize the avifauna in forest remnants of the Brejos de Altitude in the state of Pernambuco: the Vale do Tabocas Farm and the RPPN Reserva Natural Brejo. Using mist-nets captures and direct observations, we recorded 211 species of birds, including 28% forest-dependent species. Four taxa endemic to the Pernambuco Center, two to the Atlantic Forest, six to the Caatinga, and 14 to the northeastern region were recorded. Eight threatened taxa were also recorded. Insectivores (44%) and omnivores (25%) were the most representative trophic guilds. Although the Vale do Tabocas fragment presented the lowest species richness, it holds more endangered and endemic species. These results indicate the importance of these forest fragments for local bird diversity maintenance and their conservation must be encouraged.","PeriodicalId":39092,"journal":{"name":"Oecologia Australis","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-03-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47793425","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-03-16DOI: 10.4257/oeco.2022.2601.11
D. O. Lima, Jady de Oliveira Sausen, Fabrício Luiz Skupien, D. Rodrigues
Oligoryzomys nigripes is a generalist rodent widely distributed in South America. The present study aims to present information on abundance, reproduction, and litter size for O. nigripes in the south of Atlantic Forest biome. This study was conducted at two forest fragments in Cerro Largo, RS, between April 2015 and October 2016, with 5,320 trap-nights. We captured most of the individuals captured during winter and spring, corroborating previous researches that indicated higher abundance during the coldest months on the southern portion of O. nigripes distribution. Reproductive animals were found during all seasons, however, males had greater chances to be reproductive during spring. During autumn of 2015, through handling and identification, one reproductive female had three young; this was a rare record of litter size for a Neotropical rodent.
{"title":"ABUNDANCE AND REPRODUCTION OF OLIGORYZOMYS NIGRIPES IN TWO FOREST FRAGMENTS, SOUTHERN OF ATLANTIC FOREST, CERRO LARGO, RS","authors":"D. O. Lima, Jady de Oliveira Sausen, Fabrício Luiz Skupien, D. Rodrigues","doi":"10.4257/oeco.2022.2601.11","DOIUrl":"https://doi.org/10.4257/oeco.2022.2601.11","url":null,"abstract":"Oligoryzomys nigripes is a generalist rodent widely distributed in South America. The present study aims to present information on abundance, reproduction, and litter size for O. nigripes in the south of Atlantic Forest biome. This study was conducted at two forest fragments in Cerro Largo, RS, between April 2015 and October 2016, with 5,320 trap-nights. We captured most of the individuals captured during winter and spring, corroborating previous researches that indicated higher abundance during the coldest months on the southern portion of O. nigripes distribution. Reproductive animals were found during all seasons, however, males had greater chances to be reproductive during spring. During autumn of 2015, through handling and identification, one reproductive female had three young; this was a rare record of litter size for a Neotropical rodent.","PeriodicalId":39092,"journal":{"name":"Oecologia Australis","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-03-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47603173","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-03-16DOI: 10.4257/oeco.2022.2601.09
Fábio André Facco Jacomassa
Medium- and large-sized wild mammals (MLSWM) are little known in protected areas. I carried a survey of MLSWM at the Reserva Biológica Municipal Moreno Fortes (REBIO-MF) in Dois Irmãos das Missões, Rio Grande do Sul state (RS), Brazil, using active search, footprint traps and interviews with residents. This work provided a list of 26 species of MLSWM. This number represent 60% of MLSWM species of Rio Grande do Sul state and 70% of those found in the region. Among them, 54% are included in the list fauna of endangered species at the state level, 19% at the national level, and 23% globally. The Crab-eating Fox (Cerdocyon thous) was the most registered and common species. The interviewees reported 24 species, 12 of which were not registered using active search and footprint traps methods. Such informations indicates REBIO-MF as an important place for MLSWM at RS.
中型和大型野生哺乳动物（MLSWM）在保护区内鲜为人知。我在巴西南里奥格兰德州Dois Irmãos das Missões的Reservea Biológica Municipal Moreno Fortes（REBIO-MF）进行了一项MLSWM调查，使用了主动搜索、足迹陷阱和对居民的采访。本工作提供了MLSWM的26个种的列表。这一数字占南里奥格兰德州MLSWM物种的60%，占该地区发现物种的70%。其中，54%在国家层面被列入濒危物种名录，19%在国家层面，23%在全球范围内。以螃蟹为食的狐狸（Cerdocyon thou）是最常见的物种。受访者报告了24个物种，其中12个没有使用主动搜索和足迹陷阱方法进行登记。这些信息表明REBIO-MF是MLSWM在RS的重要位置。
{"title":"MEDIUM- AND LARGE-SIZED WILD MAMMALS OF THE RESERVA BIOLÓGICA MUNICIPAL MORENO FORTES, DOIS IRMÃOS DAS MISSÕES, RIO GRANDE DO SUL STATE, BRAZIL","authors":"Fábio André Facco Jacomassa","doi":"10.4257/oeco.2022.2601.09","DOIUrl":"https://doi.org/10.4257/oeco.2022.2601.09","url":null,"abstract":"Medium- and large-sized wild mammals (MLSWM) are little known in protected areas. I carried a survey of MLSWM at the Reserva Biológica Municipal Moreno Fortes (REBIO-MF) in Dois Irmãos das Missões, Rio Grande do Sul state (RS), Brazil, using active search, footprint traps and interviews with residents. This work provided a list of 26 species of MLSWM. This number represent 60% of MLSWM species of Rio Grande do Sul state and 70% of those found in the region. Among them, 54% are included in the list fauna of endangered species at the state level, 19% at the national level, and 23% globally. The Crab-eating Fox (Cerdocyon thous) was the most registered and common species. The interviewees reported 24 species, 12 of which were not registered using active search and footprint traps methods. Such informations indicates REBIO-MF as an important place for MLSWM at RS.","PeriodicalId":39092,"journal":{"name":"Oecologia Australis","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-03-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42900288","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-03-16DOI: 10.4257/oeco.2022.2601.08
I. Aximoff, Antônio Marcos dos Santos, Karen Santos Toledo, A. C. Freitas, Heloisa Carneiro da Rocha Guillobel
The state of Minas Gerais has already lost more than half of the original Cerrado coverage. Mammals are among the beings most affected by this. Fauna inventories are essential for future conservation actions. In this sense, between July 2018 and December 2020, the richness and composition of medium and large mammals in a Cerrado fragment in the central-west of Minas Gerais were evaluated, using direct visualization methods (464 hours of searches) and camera traps (380 night traps). Were recorded 28 wild species, including seven threatened species, two of which are globally threatened. Carnivora was the most representative order (12 species), followed by Cingulata and Primates (4 each). The richness found was superior to other fragments and similar to nearby protected areas a dozen times larger. The fragment and the high species richness studied, including endangered species and large predators, suffer anthropic pressure, requiring short-term measures for their conservation
{"title":"MEDIUM AND LARGE SIZED MAMMALS IN FRAGMENT AT CERRADO, MINAS GERAIS, BRAZIL","authors":"I. Aximoff, Antônio Marcos dos Santos, Karen Santos Toledo, A. C. Freitas, Heloisa Carneiro da Rocha Guillobel","doi":"10.4257/oeco.2022.2601.08","DOIUrl":"https://doi.org/10.4257/oeco.2022.2601.08","url":null,"abstract":"The state of Minas Gerais has already lost more than half of the original Cerrado coverage. Mammals are among the beings most affected by this. Fauna inventories are essential for future conservation actions. In this sense, between July 2018 and December 2020, the richness and composition of medium and large mammals in a Cerrado fragment in the central-west of Minas Gerais were evaluated, using direct visualization methods (464 hours of searches) and camera traps (380 night traps). Were recorded 28 wild species, including seven threatened species, two of which are globally threatened. Carnivora was the most representative order (12 species), followed by Cingulata and Primates (4 each). The richness found was superior to other fragments and similar to nearby protected areas a dozen times larger. The fragment and the high species richness studied, including endangered species and large predators, suffer anthropic pressure, requiring short-term measures for their conservation","PeriodicalId":39092,"journal":{"name":"Oecologia Australis","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-03-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43737817","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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