Abstract - We conducted observational and experimental studies of the endangered hemiparasitic plant species Schwalbea americana (American Chaffseed, hereafter Schwalbea) in the New Jersey pine barrens to better understand its association with fine-scale environmental conditions. Spatial analyses of Schwalbea coordinates revealed a clustered distribution and analyses of environmental variables found clear associations of Schwalbea clusters with various soil, water, and plant community conditions, including several grass and composite (Asteraceae) species, especially Chrysopsis mariana (Maryland Golden-aster) and Schizachyrium scoparium (Little Bluestem). Subsequent experiments found soil from adjacent areas completely inhibited Schwalbea germination, and greater growth and survival occurred when planted with composites than with grass or woody host species. These factors appeared to explain the failures of past propagation and restoration efforts, which did not reflect these microhabitat preferences.
摘要-我们在新泽西州松树荒地对濒危的半寄生植物Schwalbea americana（American Chaffseed，以下简称Schwalbea）进行了观测和实验研究，以更好地了解其与精细环境条件的关系。Schwalbea坐标的空间分析揭示了一种聚类分布，环境变量的分析发现Schwalbea聚类与各种土壤、水和植物群落条件有明显的关联，包括几种草和复合（菊科）物种，特别是马里亚纳金藻（Maryland Golden aster）和scoparium Schizachyrium（Little Bluestem）。随后的实验发现，邻近地区的土壤完全抑制了Schwalbea的发芽，与草或木质寄主物种相比，复合材料种植的Schwalbea生长和存活率更高。这些因素似乎解释了过去繁殖和恢复工作的失败，而这些努力并没有反映出这些微栖息地的偏好。
{"title":"Microhabitat Relationships of the Endangered Hemiparasite Schwalbea americana (American Chaffseed) in the New Jersey Pine Barrens","authors":"Jay F. Kelly, R. Denhof","doi":"10.1656/045.029.0104","DOIUrl":"https://doi.org/10.1656/045.029.0104","url":null,"abstract":"Abstract - We conducted observational and experimental studies of the endangered hemiparasitic plant species Schwalbea americana (American Chaffseed, hereafter Schwalbea) in the New Jersey pine barrens to better understand its association with fine-scale environmental conditions. Spatial analyses of Schwalbea coordinates revealed a clustered distribution and analyses of environmental variables found clear associations of Schwalbea clusters with various soil, water, and plant community conditions, including several grass and composite (Asteraceae) species, especially Chrysopsis mariana (Maryland Golden-aster) and Schizachyrium scoparium (Little Bluestem). Subsequent experiments found soil from adjacent areas completely inhibited Schwalbea germination, and greater growth and survival occurred when planted with composites than with grass or woody host species. These factors appeared to explain the failures of past propagation and restoration efforts, which did not reflect these microhabitat preferences.","PeriodicalId":49742,"journal":{"name":"Northeastern Naturalist","volume":"29 1","pages":"28 - 54"},"PeriodicalIF":0.4,"publicationDate":"2022-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41780690","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Jasmine D. Nyce, W. Koh, Kristen S. Wurth, J. Sulikowski
Abstract The use of baited remote underwater video surveys (BRUVS) has become increasingly prevalent in temperate ecosystems in recent years as this technique provides data on ecosystem structure and species composition. To date, no BRUVS have been performed in the Saco Bay due to natural obstacles within the region. Our modified BRUVS resulted in 66 hours of video recorded over 2 sampling periods with 17 different species of various taxa observed. A total of 623 individuals was observed based on MaxN. These baited remote underwater video surveys successfully provided ecosystem data; therefore, we suggest that it would be an ideal complementary sampling method for this region.
{"title":"A Preliminary Qualitative Study of Baited Remote Underwater Video Surveys (BRUVS) on Fish Assemblage in the Coastal Waters of Maine","authors":"Jasmine D. Nyce, W. Koh, Kristen S. Wurth, J. Sulikowski","doi":"10.1656/045.029.0101","DOIUrl":"https://doi.org/10.1656/045.029.0101","url":null,"abstract":"Abstract The use of baited remote underwater video surveys (BRUVS) has become increasingly prevalent in temperate ecosystems in recent years as this technique provides data on ecosystem structure and species composition. To date, no BRUVS have been performed in the Saco Bay due to natural obstacles within the region. Our modified BRUVS resulted in 66 hours of video recorded over 2 sampling periods with 17 different species of various taxa observed. A total of 623 individuals was observed based on MaxN. These baited remote underwater video surveys successfully provided ecosystem data; therefore, we suggest that it would be an ideal complementary sampling method for this region.","PeriodicalId":49742,"journal":{"name":"Northeastern Naturalist","volume":"29 1","pages":"1 - 10"},"PeriodicalIF":0.4,"publicationDate":"2022-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42889437","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Abstract Pinus rigida (Pitch Pine)–Quercus ilicifolia (Scrub Oak) barrens require active management to maintain, but the effects of forest management on snakes and game birds is poorly understood. We conducted vegetation surveys and examined incidental encounter data of a variety of snake and game bird species on a managed pine barren in Montague, MA, from 2008 to 2018. We recorded 73 observations, including 44 Coluber constrictor constrictor (Northern Black Racer) and 7 Meleagris gallopavo (Wild Turkey) nests. All of our observations were in managed habitats (Scrub Oak, treated Pitch Pine, and powerline corridors) which had low (<30%) tree canopy cover. Observed densities of Northern Black Racers did not significantly vary among these open-canopy habitats, or with time since treatment between 2 to 8 years since initial harvest in treated Pitch Pine. We did not conduct extensive surveys in unmanaged, closed-canopy Pitch Pine forests; thus, we were unable to determine the relative use by racers and game birds of unmanaged versus managed habitats. Nevertheless, snakes and game birds were using and nesting in the managed habitats at least to some extent. Our findings on racers and game birds from this study are preliminary, but combined with results from other studies, they suggest that ecosystem management in pine barrens can benefit snakes and game birds, along with a wide variety of other taxa.
{"title":"Observations of Snakes and Game Birds in a Managed Pine Barren in Massachusetts","authors":"Michael E. Akresh, Evan D. Meeker, David I. King","doi":"10.1656/045.029.0102","DOIUrl":"https://doi.org/10.1656/045.029.0102","url":null,"abstract":"Abstract Pinus rigida (Pitch Pine)–Quercus ilicifolia (Scrub Oak) barrens require active management to maintain, but the effects of forest management on snakes and game birds is poorly understood. We conducted vegetation surveys and examined incidental encounter data of a variety of snake and game bird species on a managed pine barren in Montague, MA, from 2008 to 2018. We recorded 73 observations, including 44 Coluber constrictor constrictor (Northern Black Racer) and 7 Meleagris gallopavo (Wild Turkey) nests. All of our observations were in managed habitats (Scrub Oak, treated Pitch Pine, and powerline corridors) which had low (<30%) tree canopy cover. Observed densities of Northern Black Racers did not significantly vary among these open-canopy habitats, or with time since treatment between 2 to 8 years since initial harvest in treated Pitch Pine. We did not conduct extensive surveys in unmanaged, closed-canopy Pitch Pine forests; thus, we were unable to determine the relative use by racers and game birds of unmanaged versus managed habitats. Nevertheless, snakes and game birds were using and nesting in the managed habitats at least to some extent. Our findings on racers and game birds from this study are preliminary, but combined with results from other studies, they suggest that ecosystem management in pine barrens can benefit snakes and game birds, along with a wide variety of other taxa.","PeriodicalId":49742,"journal":{"name":"Northeastern Naturalist","volume":"29 1","pages":"11 - 27"},"PeriodicalIF":0.4,"publicationDate":"2022-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46634949","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Abstract We report the first breeding record of Coragyps atratus (Black Vulture) in Vermont. The birds nested in a dilapidated barn in downtown Burlington, and successfully reared a single chick despite the barn's partial demolition shortly after the chick hatched. This record represents the northernmost breeding record in the US for the species, whose US range has extended steadily northwards in the past century.
{"title":"First Breeding Record of the Black Vulture (Coragyps atratus) in Vermont","authors":"C. Crowley, Kyle F. Tansley, N. Buckley","doi":"10.1656/045.029.0103","DOIUrl":"https://doi.org/10.1656/045.029.0103","url":null,"abstract":"Abstract We report the first breeding record of Coragyps atratus (Black Vulture) in Vermont. The birds nested in a dilapidated barn in downtown Burlington, and successfully reared a single chick despite the barn's partial demolition shortly after the chick hatched. This record represents the northernmost breeding record in the US for the species, whose US range has extended steadily northwards in the past century.","PeriodicalId":49742,"journal":{"name":"Northeastern Naturalist","volume":"29 1","pages":"N1 - N5"},"PeriodicalIF":0.4,"publicationDate":"2022-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48422910","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
E. Burakowski, A. Contosta, D. Grogan, S. Nelson, S. Garlick, N. Casson
- Winters in northeastern North America have warmed faster than summers, with impacts on ecosystems and society. Global climate models (GCMs) indicate that winters will continue to warm and lose snow in the future, but uncertainty remains regarding the magnitude of warming. Here, we project future trends in winter indicators under lower and higher climate-warming scenarios based on emission levels across northeastern North America at a fine spatial scale (1/16°) relevant to climate-related decision making. Under both climate scenarios, winters continue to warm with coincident increases in days above freezing, decreases in days with snow cover, and fewer nights below freezing. Deep snow-packs become increasingly short-lived, decreasing from a historical baseline of 2 months of subnivium habitat to <1 month under the warmer, higher-emissions climate scenario. Warmer winter temperatures allow invasive pests such as Adelges tsugae (Hemlock Woolly Adelgid) and Dendroctonus frontalis (Southern Pine Beetle) to expand their range north-ward due to reduced overwinter mortality. The higher elevations remain more resilient to winter warming compared to more southerly and coastal regions. Decreases in natural snowpack and warmer temperatures point toward a need for adaptation and mitigation in the multi-million-dollar winter-recreation and forest-management economies.
{"title":"Future of Winter in Northeastern North America: Climate Indicators Portray Warming and Snow Loss That Will Impact Ecosystems and Communities","authors":"E. Burakowski, A. Contosta, D. Grogan, S. Nelson, S. Garlick, N. Casson","doi":"10.1656/045.028.s1112","DOIUrl":"https://doi.org/10.1656/045.028.s1112","url":null,"abstract":"- Winters in northeastern North America have warmed faster than summers, with impacts on ecosystems and society. Global climate models (GCMs) indicate that winters will continue to warm and lose snow in the future, but uncertainty remains regarding the magnitude of warming. Here, we project future trends in winter indicators under lower and higher climate-warming scenarios based on emission levels across northeastern North America at a fine spatial scale (1/16°) relevant to climate-related decision making. Under both climate scenarios, winters continue to warm with coincident increases in days above freezing, decreases in days with snow cover, and fewer nights below freezing. Deep snow-packs become increasingly short-lived, decreasing from a historical baseline of 2 months of subnivium habitat to <1 month under the warmer, higher-emissions climate scenario. Warmer winter temperatures allow invasive pests such as Adelges tsugae (Hemlock Woolly Adelgid) and Dendroctonus frontalis (Southern Pine Beetle) to expand their range north-ward due to reduced overwinter mortality. The higher elevations remain more resilient to winter warming compared to more southerly and coastal regions. Decreases in natural snowpack and warmer temperatures point toward a need for adaptation and mitigation in the multi-million-dollar winter-recreation and forest-management economies.","PeriodicalId":49742,"journal":{"name":"Northeastern Naturalist","volume":"1 1","pages":""},"PeriodicalIF":0.4,"publicationDate":"2022-02-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48303839","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The Symposium on Climate Change in Maine’s Mountains, which catalyzed this special issue, was supported by The Betterment Fund, High Peaks Initiative, Onion Foundation, Rangeley Lakes Heritage Trust, and the Maine Community Foundation Buck Family Fund. Symposium information is available online https://mainemountaincollaborative.org/symposiums-and-webinars/. Peter Selmayr produced artwork featured on the cover of this issue. We thank the conference speakers, including keynote presenter L. Rustad, US Forest Service. The Symposium and breakout sessions benefitted from the work of several facilitators who co-organized sessions: Hannah Webber, Alyssa Soucy, Ruth van Kampen, and Kevin Duffy at the University of Maine. The Symposium Organizing Committee was Bryan Wentzell, Caitlin McDonough MacKenzie, Jay Wason, Rachel Hovel, Abe Miller-Rushing, David Miller, Sarah Nelson. We thank Keith Goldfarb at Northeastern Naturalist for supporting article submissions and assisting with planning of this special issue, as well as the editors who coordinated individual paper reviews and the peer reviewers who provided valuable feedback towards improving the content provided herein. Finally, we thank the paper submitters, whose appreciation for the mountains of the Northeast inspired these studies.
促进本期特刊的缅因州山区气候变化研讨会得到了改善基金、高峰倡议、洋葱基金会、兰格利湖遗产信托基金和缅因州社区基金会巴克家庭基金的支持。研讨会信息可在线查阅https://mainemountaincollaborative.org/symposiums-and-webinars/。彼得·塞尔迈尔(Peter Selmayr)制作的艺术作品登上了这期杂志的封面。我们感谢会议的发言人，包括主讲人L. Rustad，美国林业局。研讨会和分组会议得益于几位共同组织会议的主持人的工作:缅因州大学的Hannah Webber, Alyssa Soucy, Ruth van Kampen和Kevin Duffy。研讨会组委会是Bryan Wentzell, Caitlin McDonough MacKenzie, Jay Wason, Rachel Hovel, Abe Miller- rush, David Miller, Sarah Nelson。我们感谢东北自然主义者的Keith Goldfarb对文章投稿的支持和对本期特刊策划的协助，以及协调个人论文评审的编辑和为改进本文提供的内容提供宝贵反馈的同行审稿人。最后，我们感谢论文的提交者，他们对东北山脉的欣赏启发了这些研究。
{"title":"General Acknowledgments","authors":"Sarah Nelson, C. MacKenzie","doi":"10.1656/045.028.s1110","DOIUrl":"https://doi.org/10.1656/045.028.s1110","url":null,"abstract":"The Symposium on Climate Change in Maine’s Mountains, which catalyzed this special issue, was supported by The Betterment Fund, High Peaks Initiative, Onion Foundation, Rangeley Lakes Heritage Trust, and the Maine Community Foundation Buck Family Fund. Symposium information is available online https://mainemountaincollaborative.org/symposiums-and-webinars/. Peter Selmayr produced artwork featured on the cover of this issue. We thank the conference speakers, including keynote presenter L. Rustad, US Forest Service. The Symposium and breakout sessions benefitted from the work of several facilitators who co-organized sessions: Hannah Webber, Alyssa Soucy, Ruth van Kampen, and Kevin Duffy at the University of Maine. The Symposium Organizing Committee was Bryan Wentzell, Caitlin McDonough MacKenzie, Jay Wason, Rachel Hovel, Abe Miller-Rushing, David Miller, Sarah Nelson. We thank Keith Goldfarb at Northeastern Naturalist for supporting article submissions and assisting with planning of this special issue, as well as the editors who coordinated individual paper reviews and the peer reviewers who provided valuable feedback towards improving the content provided herein. Finally, we thank the paper submitters, whose appreciation for the mountains of the Northeast inspired these studies.","PeriodicalId":49742,"journal":{"name":"Northeastern Naturalist","volume":"28 1","pages":"i - i"},"PeriodicalIF":0.4,"publicationDate":"2022-01-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48500559","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Sarah Nelson, C. MacKenzie, T. Morelli, J. Wason, Bryan Wentzell, R. Hovel, G. Hodgkins, A. Miller‐Rushing, David Miller, Steven A. Tatko, Amanda Cross, Mike Pounch
Mountains in the Northeast are critical for maintaining biodiversity, recreational opportunities, and freshwater resources, and as potential refugia for cold-dependent flora and fauna. The mountain regions of Maine, the rest of northern New England and New York’s Adirondacks, and eastern Canada (Fig. 1) are within a day’s drive of the largest metropolitan areas in the US and Canada, yet are recognized as being largely unfragmented and intact. Many mountain ecosystems are protected from local pressures such as human development, agriculture, and other anthropogenic change via conservation efforts or de facto due to inaccessible terrain, but other stressors such as climate change are affecting these fragile and unique systems. The northeastern US is warming faster than most other regions of the world, and these trends are projected to continue (Karmalkar and Bradley 2018). Although detailed data are lacking from Maine’s mountains, research has shown that midto high-elevation areas, as well as more northerly regions, are experiencing the largest climate changes (Pepin et al. 2015). These changes are affecting biodiversity and ecosystem services at all levels (Weiskopf et al. 2020). Thus, mountain ecosystems are of great interest for scientific research that tests hypotheses about species interactions, landscape ecology, physical processes (hydrology, geochemistry), climate-change refugia and tipping points, and physiological response of biota in an extreme environment. These issues were explored in several regional events over the past 5 decades. On April 29, 1972, the first Maine Mountain Conference convened in Augusta, ME, “for the purpose of discussing the nature of the Maine mountain environment and also the present and future uses of these areas” (Maine Mountain Committee 1972).
{"title":"Introduction: Climate Change in the Mountains of Maine and the Northeast","authors":"Sarah Nelson, C. MacKenzie, T. Morelli, J. Wason, Bryan Wentzell, R. Hovel, G. Hodgkins, A. Miller‐Rushing, David Miller, Steven A. Tatko, Amanda Cross, Mike Pounch","doi":"10.1656/045.028.s1111","DOIUrl":"https://doi.org/10.1656/045.028.s1111","url":null,"abstract":"Mountains in the Northeast are critical for maintaining biodiversity, recreational opportunities, and freshwater resources, and as potential refugia for cold-dependent flora and fauna. The mountain regions of Maine, the rest of northern New England and New York’s Adirondacks, and eastern Canada (Fig. 1) are within a day’s drive of the largest metropolitan areas in the US and Canada, yet are recognized as being largely unfragmented and intact. Many mountain ecosystems are protected from local pressures such as human development, agriculture, and other anthropogenic change via conservation efforts or de facto due to inaccessible terrain, but other stressors such as climate change are affecting these fragile and unique systems. The northeastern US is warming faster than most other regions of the world, and these trends are projected to continue (Karmalkar and Bradley 2018). Although detailed data are lacking from Maine’s mountains, research has shown that midto high-elevation areas, as well as more northerly regions, are experiencing the largest climate changes (Pepin et al. 2015). These changes are affecting biodiversity and ecosystem services at all levels (Weiskopf et al. 2020). Thus, mountain ecosystems are of great interest for scientific research that tests hypotheses about species interactions, landscape ecology, physical processes (hydrology, geochemistry), climate-change refugia and tipping points, and physiological response of biota in an extreme environment. These issues were explored in several regional events over the past 5 decades. On April 29, 1972, the first Maine Mountain Conference convened in Augusta, ME, “for the purpose of discussing the nature of the Maine mountain environment and also the present and future uses of these areas” (Maine Mountain Committee 1972).","PeriodicalId":49742,"journal":{"name":"Northeastern Naturalist","volume":"28 1","pages":"ii - ix"},"PeriodicalIF":0.4,"publicationDate":"2022-01-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47939985","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Abstract - Floodplain forests provide valuable ecosystem services, yet human activity has degraded many of these riverine systems. Previous investigations of floodplain forest composition have frequently focused on flooding without incorporating successional dynamics; however, their restoration requires understanding both. We investigated floodplain forest composition along both flooding and succession gradients. River meandering builds new floodplain land with a variable microtopography and diverse levels of flood exposure. We compared vegetation to floodplain land ages on chronological sequences. Our results suggest that diverse species assemblages in floodplains result at least in part from geomorphic change. Ensuring that flood pulses continue to erode riverbanks and deposit sediments on sandbars and in floodplains is essential to the restoration and conservation of diverse forest assemblages in these ecosystems.
{"title":"Species Distributions on Successional and Flooding Gradients in Connecticut River Floodplain Forests","authors":"Christian O. Marks, B. Yellen, K. Nislow","doi":"10.1656/045.028.0415","DOIUrl":"https://doi.org/10.1656/045.028.0415","url":null,"abstract":"Abstract - Floodplain forests provide valuable ecosystem services, yet human activity has degraded many of these riverine systems. Previous investigations of floodplain forest composition have frequently focused on flooding without incorporating successional dynamics; however, their restoration requires understanding both. We investigated floodplain forest composition along both flooding and succession gradients. River meandering builds new floodplain land with a variable microtopography and diverse levels of flood exposure. We compared vegetation to floodplain land ages on chronological sequences. Our results suggest that diverse species assemblages in floodplains result at least in part from geomorphic change. Ensuring that flood pulses continue to erode riverbanks and deposit sediments on sandbars and in floodplains is essential to the restoration and conservation of diverse forest assemblages in these ecosystems.","PeriodicalId":49742,"journal":{"name":"Northeastern Naturalist","volume":"28 1","pages":"577 - 602"},"PeriodicalIF":0.4,"publicationDate":"2021-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44494755","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Abstract - The bryophyte flora of Virginia is vastly understudied compared to its vascular flora. Few instances of bryological investigation occurred in the state until interest rose in the 19th and 20th centuries. The full distribution of many common bryophyte species in the state remains incomplete due to a lack of field investigation. Here, we add to the knowledge of Virginia's bryophytes by documenting 39 total species of bryophytes from our study sites, including 15 new records of bryophyte species for Montgomery County. We made collections in an urban old-growth forest fragment and a secondary-growth forest on the campus of Virginia Tech. We devote special discussion to observations of 2 hepatic species and their ecological significance.
{"title":"Bryophyte Diversity of On-Campus Old-Growth and SEcondary-Growth Forests in Montgomery County, Virginia","authors":"Allen W. Milby, J. Metzgar","doi":"10.1656/045.028.0414","DOIUrl":"https://doi.org/10.1656/045.028.0414","url":null,"abstract":"Abstract - The bryophyte flora of Virginia is vastly understudied compared to its vascular flora. Few instances of bryological investigation occurred in the state until interest rose in the 19th and 20th centuries. The full distribution of many common bryophyte species in the state remains incomplete due to a lack of field investigation. Here, we add to the knowledge of Virginia's bryophytes by documenting 39 total species of bryophytes from our study sites, including 15 new records of bryophyte species for Montgomery County. We made collections in an urban old-growth forest fragment and a secondary-growth forest on the campus of Virginia Tech. We devote special discussion to observations of 2 hepatic species and their ecological significance.","PeriodicalId":49742,"journal":{"name":"Northeastern Naturalist","volume":"28 1","pages":"566 - 576"},"PeriodicalIF":0.4,"publicationDate":"2021-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47943260","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Denise Manole, J. Selfridge, A. Wilson, Lien Miller, Dana L. Price
Abstract We investigated ant species richness and abundance of the maritime forest and dune habitats of Assateague Island, a barrier island off the coasts of Maryland and Virginia. We paired 5 transects of 100 m in forest habitats with 5 transects in dune and grassland habitats, with pitfall traps set every 10 m along each transect. During a 5-month period (May–September), we collected 26 species of ants, including 9 that had not been previously recorded on the island and 2 that had never been recorded east of Maryland's Chesapeake Bay. Forest habitats had a significantly higher species richness than the dunes, with 24 and 14 species collected, respectively. Our research provides baseline data on ant species richness for this temperate barrier island using pitfall-collection methods. We provide evidence for forest habitats supporting higher species richness and make suggestions for future research.
{"title":"Ants of the Forest and Dune Habitats of an Atlantic Coastal Barrier Island","authors":"Denise Manole, J. Selfridge, A. Wilson, Lien Miller, Dana L. Price","doi":"10.1656/045.028.0413","DOIUrl":"https://doi.org/10.1656/045.028.0413","url":null,"abstract":"Abstract We investigated ant species richness and abundance of the maritime forest and dune habitats of Assateague Island, a barrier island off the coasts of Maryland and Virginia. We paired 5 transects of 100 m in forest habitats with 5 transects in dune and grassland habitats, with pitfall traps set every 10 m along each transect. During a 5-month period (May–September), we collected 26 species of ants, including 9 that had not been previously recorded on the island and 2 that had never been recorded east of Maryland's Chesapeake Bay. Forest habitats had a significantly higher species richness than the dunes, with 24 and 14 species collected, respectively. Our research provides baseline data on ant species richness for this temperate barrier island using pitfall-collection methods. We provide evidence for forest habitats supporting higher species richness and make suggestions for future research.","PeriodicalId":49742,"journal":{"name":"Northeastern Naturalist","volume":"28 1","pages":"556 - 565"},"PeriodicalIF":0.4,"publicationDate":"2021-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45759123","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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