Pub Date : 2015-03-24DOI: 10.5053/EKOLOJI.2015.944
U. Tavsanoglu, Reihaneh Maleki, N. Akbulut
Zooplankton plays a key role in aquatic environments maintaining clear water conditions at low predation pressure via grazing on phytoplankton; thus, they can be sensitive indicators of environmental disturbances. According to climate predictions, arid and semi-arid regions will become warmer, and a critical consequence for lake ecosystems is salinization. Salinity, a critical abiotic factor influencing zooplankton survival, changes the trophic interactions in a lake. We explored the potential effects of conductivity (an indirect measure of salinity) on the zooplankton taxa in three lakes located in the Konya Closed Basin, Turkey. Zooplankton taxa show significant differences between lakes of low and high conductivity but do not display significant seasonal difference except Cladocera. Species diversity is shown to decrease with conductivity. Large-sized cladocerans such as Daphnia and Simocephalus appear in freshwater lakes; conversely, the halobiont Brachionus plicatilis was observed only in the brackish lake. Our results show that the changes in salinity will have a substantial impact on aquatic ecosystems.
{"title":"Effects of Salinity on the Zooplankton Community Structure in Two Maar Lakes and One Freshwater Lake in the Konya Closed Basin, Turkey","authors":"U. Tavsanoglu, Reihaneh Maleki, N. Akbulut","doi":"10.5053/EKOLOJI.2015.944","DOIUrl":"https://doi.org/10.5053/EKOLOJI.2015.944","url":null,"abstract":"Zooplankton plays a key role in aquatic environments maintaining clear water conditions at low predation pressure via grazing on phytoplankton; thus, they can be sensitive indicators of environmental disturbances. According to climate predictions, arid and semi-arid regions will become warmer, and a critical consequence for lake ecosystems is salinization. Salinity, a critical abiotic factor influencing zooplankton survival, changes the trophic interactions in a lake. We explored the potential effects of conductivity (an indirect measure of salinity) on the zooplankton taxa in three lakes located in the Konya Closed Basin, Turkey. Zooplankton taxa show significant differences between lakes of low and high conductivity but do not display significant seasonal difference except Cladocera. Species diversity is shown to decrease with conductivity. Large-sized cladocerans such as Daphnia and Simocephalus appear in freshwater lakes; conversely, the halobiont Brachionus plicatilis was observed only in the brackish lake. Our results show that the changes in salinity will have a substantial impact on aquatic ecosystems.","PeriodicalId":11598,"journal":{"name":"Ekoloji","volume":"24 1","pages":"25-32"},"PeriodicalIF":0.0,"publicationDate":"2015-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70624308","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 : 2015-03-24DOI: 10.5053/EKOLOJI.2015.943
M. Ünal
This research was conducted in order for sewage sludge, which complies with the criteria stated in the last 2010 Sludge Regulation on Soil Pollution and its Control, to be used as a seedling growth media. In this research, peat and soil were used as controls, and peat + sewage sludge + perlite and soil + sewage sludge + perlite were mixed at different rates and 8 growing media were prepared for each. Some quality specifications of the tomato seedlings were investigated by determining their nutrient contents in the growth media. According to the research results, the media mixed with peat was found statistically different at the level of p<0.05 in the seedling quality characteristics except for the cotyledon width, and the media mixed with soil was found statistically different at the level of p<0.05 in all the determined seedling quality characteristics. The growth media prepared by mixing peat and sewage sludge proportionately had a positive effect on seedling formation. The O5 media, which contained 40% peat + 50% sewage sludge + 10% perlite, had the best values of seedling length, seedling root length, shoot fresh weight, and root fresh weight. In the soil-controlled media, the M5 media, which contained 40% soil + 50% sewage sludge + 10% perlite, had the best values of seedling root length and root fresh weight.
{"title":"Research on the Possibilities of Using Paper Mill Sewage Sludge as an Alternative Seedling Growth Media to Peat","authors":"M. Ünal","doi":"10.5053/EKOLOJI.2015.943","DOIUrl":"https://doi.org/10.5053/EKOLOJI.2015.943","url":null,"abstract":"This research was conducted in order for sewage sludge, which complies with the criteria stated in the last 2010 Sludge Regulation on Soil Pollution and its Control, to be used as a seedling growth media. In this research, peat and soil were used as controls, and peat + sewage sludge + perlite and soil + sewage sludge + perlite were mixed at different rates and 8 growing media were prepared for each. Some quality specifications of the tomato seedlings were investigated by determining their nutrient contents in the growth media. According to the research results, the media mixed with peat was found statistically different at the level of p<0.05 in the seedling quality characteristics except for the cotyledon width, and the media mixed with soil was found statistically different at the level of p<0.05 in all the determined seedling quality characteristics. The growth media prepared by mixing peat and sewage sludge proportionately had a positive effect on seedling formation. The O5 media, which contained 40% peat + 50% sewage sludge + 10% perlite, had the best values of seedling length, seedling root length, shoot fresh weight, and root fresh weight. In the soil-controlled media, the M5 media, which contained 40% soil + 50% sewage sludge + 10% perlite, had the best values of seedling root length and root fresh weight.","PeriodicalId":11598,"journal":{"name":"Ekoloji","volume":"24 1","pages":"17-24"},"PeriodicalIF":0.0,"publicationDate":"2015-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70624370","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 : 2015-03-24DOI: 10.5053/EKOLOJI.2015.946
M. Parlak, Ç. Onsekiz
Wildfires cause an increase in runoff and erosion due to the destruction of vegetative cover and alteration of soil characteristics. This study was carried out to determine the impacts of the forest fire, the runoff and erosion, which occurred on 18 August 2011 in the Village of Doganci, a village of the city of Bayramic located southeast of Canakkale. A total of 12 rainfall simulations were performed on the adjacent burned and unburned lands. Simulations were carried out during the initial month after the fire under very low soil moisture conditions. The parameters: time to runoff, mean runoff, maximum runoff rate, runoff percentage, sediment concentration, peak of sediment, and total soil loss were measured for each simulation. The data was compared using an independent t-test. The difference in time to runoff values between the burned and unburned cases was found to be significant at p<0.01 level. The runoff and maximum runoff values of the burned plots were found to be respectively 15 and 16 times higher than the unburned plots. While the runoff percentage was 7.66% for the burned plots, it was determined as 0.51% for the unburned plots. Sediment concentration and the peak of sediment for burned plots were found to be 7.70 g L-1 and 14.67 g L-1, respectively, and the values for the unburned plots were observed as
由于植被覆盖的破坏和土壤特征的改变，野火造成径流和侵蚀的增加。开展这项研究是为了确定2011年8月18日发生在恰纳卡莱东南部Bayramic市的一个村庄Doganci村的森林火灾、径流和侵蚀的影响。在相邻的烧地和未烧地共进行了12次降雨模拟。模拟是在火灾后的第一个月，在非常低的土壤湿度条件下进行的。每次模拟均测量了径流时间、平均径流量、最大径流量、径流量百分比、含沙量、含沙量峰值和土壤总流失量。数据比较采用独立t检验。在p<0.01的水平上，燃烧和未燃烧情况下的时间与径流值差异显著。燃烧样地径流量和最大径流量分别是未燃烧样地的15倍和16倍。燃烧样地径流量为7.66%，未燃烧样地径流量为0.51%。燃烧样地的含沙量为7.70 g L-1，沉积物峰值为14.67 g L-1，未燃烧样地的含沙量为
{"title":"Effects of Wildfire on Runoff and Soil Erosion in the Southeastern Marmara Region, Turkey","authors":"M. Parlak, Ç. Onsekiz","doi":"10.5053/EKOLOJI.2015.946","DOIUrl":"https://doi.org/10.5053/EKOLOJI.2015.946","url":null,"abstract":"Wildfires cause an increase in runoff and erosion due to the destruction of vegetative cover and alteration of soil characteristics. This study was carried out to determine the impacts of the forest fire, the runoff and erosion, which occurred on 18 August 2011 in the Village of Doganci, a village of the city of Bayramic located southeast of Canakkale. A total of 12 rainfall simulations were performed on the adjacent burned and unburned lands. Simulations were carried out during the initial month after the fire under very low soil moisture conditions. The parameters: time to runoff, mean runoff, maximum runoff rate, runoff percentage, sediment concentration, peak of sediment, and total soil loss were measured for each simulation. The data was compared using an independent t-test. The difference in time to runoff values between the burned and unburned cases was found to be significant at p<0.01 level. The runoff and maximum runoff values of the burned plots were found to be respectively 15 and 16 times higher than the unburned plots. While the runoff percentage was 7.66% for the burned plots, it was determined as 0.51% for the unburned plots. Sediment concentration and the peak of sediment for burned plots were found to be 7.70 g L-1 and 14.67 g L-1, respectively, and the values for the unburned plots were observed as","PeriodicalId":11598,"journal":{"name":"Ekoloji","volume":"24 1","pages":"43-48"},"PeriodicalIF":0.0,"publicationDate":"2015-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70624193","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 : 2015-03-24DOI: 10.5053/EKOLOJI.2015.942
S. F. Erdoğmuş, S. E. Korcan, M. Konuk, K. Guven, M. Mutlu
The aim of this study is to reveal the ability of utilizing different aromatic hydrocarbons (p-hydroxybenzoic acid, naphthalene, phenanthrene, and pyrene) by a halotolerant bacterial strain, Chromohalobacter sp., under saline conditions. The aromatic hydrocarbon degradation pathways were identified. PCR amplification was carried to define the gene zones which codify the dioxygenases of the isolates. The possible gene zones of catechol 1, 2 dioxygenase and protocatechuate 3, and 4 dioxygenase were determined. According to the PCR amplification and enzyme test results Chromohalobacter sp. utilizes aromatic hydrocarbons by the ortho cleavage of the s-ketoadipate pathway. In this study, it was concluded that this isolate can be used in bioremediation studies of saline environments contaminated with aromatic hydrocarbons.
{"title":"Aromatic Hydrocarbon Utilization Ability of Chromohalobacter sp.","authors":"S. F. Erdoğmuş, S. E. Korcan, M. Konuk, K. Guven, M. Mutlu","doi":"10.5053/EKOLOJI.2015.942","DOIUrl":"https://doi.org/10.5053/EKOLOJI.2015.942","url":null,"abstract":"The aim of this study is to reveal the ability of utilizing different aromatic hydrocarbons (p-hydroxybenzoic acid, naphthalene, phenanthrene, and pyrene) by a halotolerant bacterial strain, Chromohalobacter sp., under saline conditions. The aromatic hydrocarbon degradation pathways were identified. PCR amplification was carried to define the gene zones which codify the dioxygenases of the isolates. The possible gene zones of catechol 1, 2 dioxygenase and protocatechuate 3, and 4 dioxygenase were determined. According to the PCR amplification and enzyme test results Chromohalobacter sp. utilizes aromatic hydrocarbons by the ortho cleavage of the s-ketoadipate pathway. In this study, it was concluded that this isolate can be used in bioremediation studies of saline environments contaminated with aromatic hydrocarbons.","PeriodicalId":11598,"journal":{"name":"Ekoloji","volume":"24 1","pages":"10-16"},"PeriodicalIF":0.0,"publicationDate":"2015-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70624267","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 : 2014-12-24DOI: 10.5053/EKOLOJI.2014.937
A. Er, M. Karacasu
Asphalt concrete has an extensive application field in road construction. Studies aiming to increase the performance of asphalt concrete have gained importance since the cost of road construction is quite high and resources are limited. On the other hand, researchers have inclined to use various wastes in asphalt concrete since the wastes from houses and industrial production has increased all over the world and the storage areas for these wastes are inadequate. The use of various wastes in asphalt concrete has become important since obtaining aggregate in good quality becomes difficult and bitumen cost has risen. In recent years, studies have increased progressively in relation to recycling of wastes and to increasing asphalt concrete performance with superstructure layers which are less in thickness. In this study, the experimental results have been summarized in relation to the use of modified bitumen in asphalt concrete, which are CR-10 and CR-15 and contain specially-treated tires. The elastic recovery rate of the modified bitumen from waste is 10 times more than normal bitumen. The penetration and softening point values of the modified bitumen’s CR-10 and CR-15 are higher than that of others. In addition, these products have a very low heat loss; therefore it can be possible to make castings in cold weather conditions. The behavior of asphalt concretes under repeated loads was investigated and asphalt concretes produced with CR-10 and CR-15 modified bitumen’s have proven to be longer lasting. In this way, using waste tires as a modifier in the bitumen not only improve the performance characteristics of the asphalt concrete but also help to reduce environmental pollution.
{"title":"Effect of Modified Bitumen with CR-10 and CR-15 on the Performance of Asphalt Concrete","authors":"A. Er, M. Karacasu","doi":"10.5053/EKOLOJI.2014.937","DOIUrl":"https://doi.org/10.5053/EKOLOJI.2014.937","url":null,"abstract":"Asphalt concrete has an extensive application field in road construction. Studies aiming to increase the performance of asphalt concrete have gained importance since the cost of road construction is quite high and resources are limited. On the other hand, researchers have inclined to use various wastes in asphalt concrete since the wastes from houses and industrial production has increased all over the world and the storage areas for these wastes are inadequate. The use of various wastes in asphalt concrete has become important since obtaining aggregate in good quality becomes difficult and bitumen cost has risen. In recent years, studies have increased progressively in relation to recycling of wastes and to increasing asphalt concrete performance with superstructure layers which are less in thickness. In this study, the experimental results have been summarized in relation to the use of modified bitumen in asphalt concrete, which are CR-10 and CR-15 and contain specially-treated tires. The elastic recovery rate of the modified bitumen from waste is 10 times more than normal bitumen. The penetration and softening point values of the modified bitumen’s CR-10 and CR-15 are higher than that of others. In addition, these products have a very low heat loss; therefore it can be possible to make castings in cold weather conditions. The behavior of asphalt concretes under repeated loads was investigated and asphalt concretes produced with CR-10 and CR-15 modified bitumen’s have proven to be longer lasting. In this way, using waste tires as a modifier in the bitumen not only improve the performance characteristics of the asphalt concrete but also help to reduce environmental pollution.","PeriodicalId":11598,"journal":{"name":"Ekoloji","volume":"23 1","pages":"50-56"},"PeriodicalIF":0.0,"publicationDate":"2014-12-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70622566","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 : 2014-12-24DOI: 10.5053/EKOLOJI.2014.936
Mustafa Celiker, O. Yildiz, Y. B. Sonmezer
This study presents an analysis of the temporal variations in the upstream water quality parameters of the Munzur Spring. For this purpose, the spring water quality was monitored from 2007 to 2009 at different time periods. There were 5 water samples taken from 2008 to 2009 for hydrochemical and biological analyses, while 6 water samples were gathered between 2007 and 2009 for heavy metal analysis. The analysis results reveal that the water quality parameters were found to be in good agreement with the drinking water standards of Anonymous (1993) and Anonymous (2005). It was seen that the upstream source of the Munzur spring is periodically characterized by Ca+2 - Mg+2 - HCO3 - and Ca+2 - Cl- - HCO3 - facies according to Anonymous (1978), and CaCO3 and CaCl2 facies according to Back (1960, 1966). The results of a tritium analysis indicated that the spring is recharged by daily precipitations. The spring water was also found suitable for irrigation purposes based on Wilcox and US salinity diagrams.
{"title":"Assessing the Water Quality Parameters of the Munzur Spring, Tunceli, Turkey","authors":"Mustafa Celiker, O. Yildiz, Y. B. Sonmezer","doi":"10.5053/EKOLOJI.2014.936","DOIUrl":"https://doi.org/10.5053/EKOLOJI.2014.936","url":null,"abstract":"This study presents an analysis of the temporal variations in the upstream water quality parameters of the Munzur Spring. For this purpose, the spring water quality was monitored from 2007 to 2009 at different time periods. There were 5 water samples taken from 2008 to 2009 for hydrochemical and biological analyses, while 6 water samples were gathered between 2007 and 2009 for heavy metal analysis. The analysis results reveal that the water quality parameters were found to be in good agreement with the drinking water standards of Anonymous (1993) and Anonymous (2005). It was seen that the upstream source of the Munzur spring is periodically characterized by Ca+2 - Mg+2 - HCO3 - and Ca+2 - Cl- - HCO3 - facies according to Anonymous (1978), and CaCO3 and CaCl2 facies according to Back (1960, 1966). The results of a tritium analysis indicated that the spring is recharged by daily precipitations. The spring water was also found suitable for irrigation purposes based on Wilcox and US salinity diagrams.","PeriodicalId":11598,"journal":{"name":"Ekoloji","volume":"23 1","pages":"43-49"},"PeriodicalIF":0.0,"publicationDate":"2014-12-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70622487","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 : 2014-12-24DOI: 10.5053/EKOLOJI.2014.934
T. O. Sevi̇ndi̇k, K. Celik
The effects of certain physical and chemical variables on the phytoplankton succession in the shallow Cagis Pond (Balikesir, Turkey) were investigated between August 2006 and July 2008. Samples were taken monthly from one sampling station. A total of 93 taxa belonging to 7 divisions were identified, including Chlorophyta (39 taxa), Heterokontophyta (30 taxa), Cyanobacteria (17 taxa), Euglenophyta (2 taxa), Dinophyta (2 taxa), Charophyta (2 taxa) and Cryptophyta (1 taxa). Cyclotella meneghiniana, Microcystis aeruginosa, Microcystis protocystis, Arthrospira platensis, and Micractinium pusillum dominated the phytoplankton at least for one season. A Canonical Correspondence Analysis (CCA) showed that water temperature, transparency, conductivity, and total dissolved solids had significant effects on the distribution and abundance of the dominant phytoplankton taxa. Sig bir golette (Cagis Goleti, Balikesir, Turkiye), fitoplanktonun tur kompozisyonu ve yogunlugu uzerine bazi temel fiziksel ve kimyasal parametrelerin etkisini belirlemek amaciyla Agustos-2006 ile Temmuz-2008 tarihleri arasinda ornekleme yapilmistir. Calisma suresi boyunca Chlorophyta'ya ait 39, Heterokontophyta'ya ait 30, Cyanobacteria'ya ait 17, Dinophyta'ya ait 2, Euglenophyta'ya ait 2, Charophyta'ya ait 2 ve Cryptophyta'ya ait 1 olmak uzere toplam 93 takson tespit edilmistir. Cyclotella meneghiniana, Microcystis aeruginosa, Microcystis protocystis, Arthrospira platensis ve Micractinium pusillum hucre yogunlugu yonunden fitoplanktonda onemli olmuslardir. Kanonik Uyum Analizi (CCA) baskin turlerin dagilimini ve yogunlugunu etkileyen en onemli parametrelerin su sicakligi, suyun isik gecirgenligi, elektriksel iletkenlik ve toplam cozunmus madde oldugunu gostermistir. Anahtar Kelimeler: Fitoplankton, Fiziksel ve Kimyasal Parametreler, Golet, Hucre yogunlugu, Kanonik Uyum Analizi (CCA)
2006年8月至2008年7月，对土耳其Balikesir Cagis浅池浮游植物演替过程中若干理化变量的影响进行了研究。每月从一个采样站采集样本。共鉴定出7个类群，共93个类群，包括绿藻(39个)、异藻门(30个)、蓝藻门(17个)、裸藻门(2个)、藻门(2个)、藻门(2个)和隐藻门(1个)。meneghinicyclotella, Microcystis铜绿微囊藻，Microcystis protocystis, Arthrospira platensis和microractium pusillum在浮游植物中占主导地位至少一个季节。典型对应分析(CCA)表明，水温、透明度、电导率和总溶解固形物对优势浮游植物类群的分布和丰度有显著影响。Sig bir golette (Cagis Goleti、Balikesir Turkiye), fitoplanktonun病重kompozisyonu ve yogunlugu uzerine坝子temel fiziksel ve kimyasal parametrelerin etkisini belirlemek amaciyla agustos - 2006 ile temmuz - 2008 tarihleri arasinda ornekleme yapilmistir。Calisma suresi boyunca绿藻门大家河中的小岛39岁Heterokontophyta大家30,蓝藻大家河中的小岛17日Dinophyta大家河中的小岛,裸藻门植物大家河中的小岛2轮藻门大家河中的小岛2已经隐藻门大家河中的小岛1 olmak uzere toplam 93 takson tespit edilmistir。meneghinicyclotella, Microcystis铜绿微囊藻，Microcystis protocystis, Arthrospira platensis, microractinium pusillum, yogunlugu, yonunden，浮游生物，onemolmuslarda。Kanonik Uyum analizizi (CCA) baskin turlerin dagilimini、yogunlugunu、etkikii、elekksel、etkikii、elekksel、etkikii、placzunmus、oldugunu gostermisir。Anahtar Kelimeler:浮游生物，Fiziksel ve Kimyasal参数，Golet, hure yogunlugu, Kanonik Uyum Analizi (CCA)
{"title":"The Effects of Certain Physical and Chemical Variables on the Succession of the Phytoplankton in the Shallow Cagis Pond (Balikesir, Turkey)","authors":"T. O. Sevi̇ndi̇k, K. Celik","doi":"10.5053/EKOLOJI.2014.934","DOIUrl":"https://doi.org/10.5053/EKOLOJI.2014.934","url":null,"abstract":"The effects of certain physical and chemical variables on the phytoplankton succession in the shallow Cagis Pond (Balikesir, Turkey) were investigated between August 2006 and July 2008. Samples were taken monthly from one sampling station. A total of 93 taxa belonging to 7 divisions were identified, including Chlorophyta (39 taxa), Heterokontophyta (30 taxa), Cyanobacteria (17 taxa), Euglenophyta (2 taxa), Dinophyta (2 taxa), Charophyta (2 taxa) and Cryptophyta (1 taxa). Cyclotella meneghiniana, Microcystis aeruginosa, Microcystis protocystis, Arthrospira platensis, and Micractinium pusillum dominated the phytoplankton at least for one season. A Canonical Correspondence Analysis (CCA) showed that water temperature, transparency, conductivity, and total dissolved solids had significant effects on the distribution and abundance of the dominant phytoplankton taxa. Sig bir golette (Cagis Goleti, Balikesir, Turkiye), fitoplanktonun tur kompozisyonu ve yogunlugu uzerine bazi temel fiziksel ve kimyasal parametrelerin etkisini belirlemek amaciyla Agustos-2006 ile Temmuz-2008 tarihleri arasinda ornekleme yapilmistir. Calisma suresi boyunca Chlorophyta'ya ait 39, Heterokontophyta'ya ait 30, Cyanobacteria'ya ait 17, Dinophyta'ya ait 2, Euglenophyta'ya ait 2, Charophyta'ya ait 2 ve Cryptophyta'ya ait 1 olmak uzere toplam 93 takson tespit edilmistir. Cyclotella meneghiniana, Microcystis aeruginosa, Microcystis protocystis, Arthrospira platensis ve Micractinium pusillum hucre yogunlugu yonunden fitoplanktonda onemli olmuslardir. Kanonik Uyum Analizi (CCA) baskin turlerin dagilimini ve yogunlugunu etkileyen en onemli parametrelerin su sicakligi, suyun isik gecirgenligi, elektriksel iletkenlik ve toplam cozunmus madde oldugunu gostermistir. Anahtar Kelimeler: Fitoplankton, Fiziksel ve Kimyasal Parametreler, Golet, Hucre yogunlugu, Kanonik Uyum Analizi (CCA)","PeriodicalId":11598,"journal":{"name":"Ekoloji","volume":"23 1","pages":"27-35"},"PeriodicalIF":0.0,"publicationDate":"2014-12-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70622697","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 : 2014-12-24DOI: 10.5053/EKOLOJI.2014.933
Zhengsheng He, S. Zhan, S. Wu
UV-B radiation and rainfall have tended to increase over the past decades in the Tibetan Plateau. A controlled field experiment, which simulated a 5% and 10% increase in UV-B radiation and a 10% and 20% increase in rainfall, was conducted to address the effects of enhanced UV-B radiation and increased rainfall on the leaf water potential, gas exchange, growth and biomass allocation, and phenology of Tibetan barley (Hordeum vulgare var. trifurcatum). Enhanced UV-B radiation conferred significant effects on the net photosynthetic rate (Pn), transpiration (E), stomatal conductance (gs), water use efficiency (WUE), total biomass, and spike length; the increased rainfall only affected Pn, E, and gs. These findings indicated that enhanced UV-B radiation had a more profound impact on the physiological and growth traits than the increased rainfall. Significant interactions of enhanced UV-B radiation and increased rainfall were also observed on leaf water potential, Pn, E, gs, WUE, total biomass, spike length, and relative growth rate. The leaf water potential was significantly increased with enhanced UV-B under the condition of a 20% increase in rainfall, Pn and biomass accumulation were also increased with enhanced UV-B under the conditions of increased rainfall, and the phenological stages were also delayed under ambient rainfall, but, this phenomenon disappeared gradually with an increased rainfall. It was therefore inferred that increased rainfall was able to offset the adverse impacts of enhanced UV-B radiation.
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Pub Date : 2014-12-24DOI: 10.5053/EKOLOJI.2014.931
Banu Kaya Ozdemirel
Marxan, a complementarity based area selection software, was used to detect the priority protected areas for the Lesser Caucasus Ecoregion. Six taxonomic groups, endemic and non-endemic highly threatened plants, globally important amphibian and reptiles, butterflies, breeding birds, large mammals, and ecological communities were included in the analysis. Nineteen areas (planning units) were identified as priority protected areas among 336 planning units (UTM grids) of 10 x 10 km. The efficacy of the identified priority areas were measured with species representation. Also, distributions of the priority areas were compared with existing protected area systems of the study area. Results indicated that priority protected areas achieved higher than 70% species representation for taxonomic groups and distributions of priority areas were very consistent with existing protected area systems. The Marxan program produced compact complementary priority protected areas. These priority protected areas provided the maximum species representation for the study area. Moreover, results showed the importance of already existing protected areas and determined the need for new protected areas.
{"title":"Detection of Priority Areas for Conservation: A Case Study in the Lesser Caucasus Region","authors":"Banu Kaya Ozdemirel","doi":"10.5053/EKOLOJI.2014.931","DOIUrl":"https://doi.org/10.5053/EKOLOJI.2014.931","url":null,"abstract":"Marxan, a complementarity based area selection software, was used to detect the priority protected areas for the Lesser Caucasus Ecoregion. Six taxonomic groups, endemic and non-endemic highly threatened plants, globally important amphibian and reptiles, butterflies, breeding birds, large mammals, and ecological communities were included in the analysis. Nineteen areas (planning units) were identified as priority protected areas among 336 planning units (UTM grids) of 10 x 10 km. The efficacy of the identified priority areas were measured with species representation. Also, distributions of the priority areas were compared with existing protected area systems of the study area. Results indicated that priority protected areas achieved higher than 70% species representation for taxonomic groups and distributions of priority areas were very consistent with existing protected area systems. The Marxan program produced compact complementary priority protected areas. These priority protected areas provided the maximum species representation for the study area. Moreover, results showed the importance of already existing protected areas and determined the need for new protected areas.","PeriodicalId":11598,"journal":{"name":"Ekoloji","volume":"23 1","pages":"1-7"},"PeriodicalIF":0.0,"publicationDate":"2014-12-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70622808","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 : 2014-12-24DOI: 10.5053/EKOLOJI.2014.935
M. Yağcı, M. R. Ustaoğlu
Ozet Bu calismada Iznik Golunun en derin bolgesi Golluce mevkiinde, zooplanktonun derinlige bagli yogunlugu ve cesitliligi Ocak 2006 ile Aralik 2006 tarihleri arasinda aylik olarak arastirilmistir. Ayrica, zooplankton turlerinin bazi fiziksel-kimyasal parametreler ile iliskileri CCA (Konoik Uyum Analizi) ile analiz edilmistir. CCA analizine gore, tuzluluk ve konduktivite ile Bosmina longirostris pozitif iliskili, Daphnia cucullata, Copepodit ve Nauplii negatif iliskili olarak bulunmustur. Keretella quadrata, Brachionus calyciflorus, Bosmina longirostris, Diaphanosoma lacustris ve Cyclops vicinus dominant turler olarak belirlenmistir. Shannon (Cesitlilik) indeksi 0.33 ile 0.98 arasinda hesaplanmistir. Zooplanktonun mevsimsel birey yogunlugu minimum 45.120 birey/m3 (Sonbahar) ve maksimum 144.613 birey/m3 (Ilkbahar) olarak tespit edilmistir. Bir yillik calisma periyodunda Rotifera grubunun 30-50 m, Cladocera grubunun 10-50 m, Copepoda grubu- nun ise 10-20 m derinlikte yogun dagilim gosterdigi belirlenmistir. Anahtar Kelimeler: CCA, Fizikokimyasal parametreler, Golluce, Iznik Golu, Zooplankton. Abstract In this study, zooplankton density and diversity with depth was investigated monthly, between January 2006 and December 2006 in the deepest area (Golluce) of Lake Iznik. In addition, the relations of zooplankton species with some physicochemical parameters were analyzed with a CCA (Canonical Correspondance Analysis). According to the CCA, Bosmina longirostris is positive relationship and Daphnia cucullata, Copepoda and Nauplii are negative relationship with conductivity and salinity. Keretella quadrata, Brachionus calyciflorus, Bosmina longirostris, Diaphanosoma lacustris and Cyclops vicinus were dominant species. Shannon's diversity index ranged from 0.33-0.98. The average total zooplankton abundance ranged from 45.120 ind./m3 (Autumn) to 144.613 ind./m 3 (Spring). One-year study period, it was determined that Rotifera, Cladocera and
{"title":"İznik Gölü (Bursa/Türkiye) Zooplanktonunun Derinliğe Bağli Yoğunluğu, Çeşitliliği ve Fizikokimyasal Parametreler ile İlişkileri","authors":"M. Yağcı, M. R. Ustaoğlu","doi":"10.5053/EKOLOJI.2014.935","DOIUrl":"https://doi.org/10.5053/EKOLOJI.2014.935","url":null,"abstract":"Ozet Bu calismada Iznik Golunun en derin bolgesi Golluce mevkiinde, zooplanktonun derinlige bagli yogunlugu ve cesitliligi Ocak 2006 ile Aralik 2006 tarihleri arasinda aylik olarak arastirilmistir. Ayrica, zooplankton turlerinin bazi fiziksel-kimyasal parametreler ile iliskileri CCA (Konoik Uyum Analizi) ile analiz edilmistir. CCA analizine gore, tuzluluk ve konduktivite ile Bosmina longirostris pozitif iliskili, Daphnia cucullata, Copepodit ve Nauplii negatif iliskili olarak bulunmustur. Keretella quadrata, Brachionus calyciflorus, Bosmina longirostris, Diaphanosoma lacustris ve Cyclops vicinus dominant turler olarak belirlenmistir. Shannon (Cesitlilik) indeksi 0.33 ile 0.98 arasinda hesaplanmistir. Zooplanktonun mevsimsel birey yogunlugu minimum 45.120 birey/m3 (Sonbahar) ve maksimum 144.613 birey/m3 (Ilkbahar) olarak tespit edilmistir. Bir yillik calisma periyodunda Rotifera grubunun 30-50 m, Cladocera grubunun 10-50 m, Copepoda grubu- nun ise 10-20 m derinlikte yogun dagilim gosterdigi belirlenmistir. Anahtar Kelimeler: CCA, Fizikokimyasal parametreler, Golluce, Iznik Golu, Zooplankton. Abstract In this study, zooplankton density and diversity with depth was investigated monthly, between January 2006 and December 2006 in the deepest area (Golluce) of Lake Iznik. In addition, the relations of zooplankton species with some physicochemical parameters were analyzed with a CCA (Canonical Correspondance Analysis). According to the CCA, Bosmina longirostris is positive relationship and Daphnia cucullata, Copepoda and Nauplii are negative relationship with conductivity and salinity. Keretella quadrata, Brachionus calyciflorus, Bosmina longirostris, Diaphanosoma lacustris and Cyclops vicinus were dominant species. Shannon's diversity index ranged from 0.33-0.98. The average total zooplankton abundance ranged from 45.120 ind./m3 (Autumn) to 144.613 ind./m 3 (Spring). One-year study period, it was determined that Rotifera, Cladocera and","PeriodicalId":11598,"journal":{"name":"Ekoloji","volume":"23 1","pages":"36-42"},"PeriodicalIF":0.0,"publicationDate":"2014-12-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70622874","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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