Chelonian Conservation and Biology最新文献_第10页

Notes on Chelodina mccordi timorensis Biology, Harvest, Current Threats, and Community Perceptions in the Lake Iralalaro Region, Timor-Leste 关于东帝汶伊拉拉罗湖地区切罗迪纳·麦科迪·帝汶的生物、收获、当前威胁和社区观念的说明

IF 0.7 4区生物学

Chelonian Conservation and Biology Pub Date : 2016-06-08 DOI: 10.2744/CCB-1138.1

C. Eisemberg, Bertanizo G. Costa, E. Guterres, S. Reynolds, K. Christian

{"title":"Notes on Chelodina mccordi timorensis Biology, Harvest, Current Threats, and Community Perceptions in the Lake Iralalaro Region, Timor-Leste","authors":"C. Eisemberg, Bertanizo G. Costa, E. Guterres, S. Reynolds, K. Christian","doi":"10.2744/CCB-1138.1","DOIUrl":"https://doi.org/10.2744/CCB-1138.1","url":null,"abstract":"Abstract The long-necked turtle Chelodina mccordi is considered Critically Endangered under IUCN Red List criteria. In Timor-Leste, the subspecies Chelodina mccordi timorensis is restricted to a small area of lacustrine habitat near the eastern tip of Timor around Lake Iralalaro in the Lautém District. We collected information on C. m. timorensis biology and harvest and assessed current threats and community perceptions. Data were collected during 2 surveys (February and July 2014) around Lake Iralalaro in Nino Konis Santana National Park. Threats were identified by direct observation, and local perceptions were recorded during expert interviews. Human harvest is the main threat in the area. Animals are captured using fishing line, are located using a bamboo stick in shallow water to probe the mud, or are captured by hand at the edge of the lake or under dry grass. Turtles are captured mainly during the dry season (April to October). Most experts identified C. m. timorensis under 2 different names according to the color (staining) of the plastron (veu = yellow and clear; sepe veu = dark and red). Local perspectives as to the population status of the turtle (stable, declining, or increasing) varied between 2 villages. Factors that may be reducing the capacity of this turtle to survive human harvest include predation by pigs and dogs. Fire and climate change are also likely to be important factors resulting in declines.","PeriodicalId":50703,"journal":{"name":"Chelonian Conservation and Biology","volume":"15 1","pages":"69 - 78"},"PeriodicalIF":0.7,"publicationDate":"2016-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.2744/CCB-1138.1","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69178987","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Identifying Climate Refugia: A Framework to Inform Conservation Strategies for Agassiz's Desert Tortoise in a Warmer Future 确定气候避难所:在更温暖的未来为阿加西沙漠龟提供保护策略的框架

IF 0.7 4区生物学

Chelonian Conservation and Biology Pub Date : 2016-06-08 DOI: 10.2744/CCB-1157.1

C. Barrows, B. Henen, Alice E. Karl

{"title":"Identifying Climate Refugia: A Framework to Inform Conservation Strategies for Agassiz's Desert Tortoise in a Warmer Future","authors":"C. Barrows, B. Henen, Alice E. Karl","doi":"10.2744/CCB-1157.1","DOIUrl":"https://doi.org/10.2744/CCB-1157.1","url":null,"abstract":"Abstract Agassiz's desert tortoise, Gopherus agassizii, faces threats from climate change. With limited mobility to move long distances to more-suitable habitat as climate change advances, whether protecting tortoises in situ or translocating them out of harm's way, a critical conservation task is identifying refugia, lands that will remain suitable under the current climate and the projected, end of the 21st Century warming and drying. While researchers have modeled tortoise habitat suitability, they have done so at coarse scales and did not identify climate refugia that may become apparent only with a fine-scale approach. It is at that scale that managers can implement measures that will foster habitat protection for tortoises throughout their current range. In this case study, we employed fine-scale habitat suitability modeling to identify current habitat and climate refugia within and surrounding the Marine Corps Air Ground Combat Center (MCAGCC) at Twentynine Palms, California. We modeled nearly 284,000 ha of currently suitable tortoise habitat within an 858,800-ha study area. Projected maximum end-of-the-century summer temperatures could reduce the area of tortoise habitat 55% to 127,650 ha; however, almost 115,800 ha would overlap current tortoise habitat and would serve as climate refugia. Applied elsewhere, where tortoise protection must be balanced with other land uses, this approach could increase the efficacy of conservation for this threatened species. Nevertheless, until validated with field studies, habitat suitability models represent hypotheses as to current and future distributions of appropriate tortoise habitat. These hypotheses should foster additional research identifying whether tortoise densities and demographic structure are more secure and whether tortoises can adapt to shifting climates more effectively within than outside modeled refugia.","PeriodicalId":50703,"journal":{"name":"Chelonian Conservation and Biology","volume":"15 1","pages":"11 - 2"},"PeriodicalIF":0.7,"publicationDate":"2016-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.2744/CCB-1157.1","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69179539","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 14

Head-Started Kemp's Ridley Turtle (Lepidochelys kempii) Nest Recorded in Florida: Possible Implications 在佛罗里达州记录的头启动肯普的雷德利海龟(Lepidochelys kempii)巢:可能的含义

IF 0.7 4区生物学

Chelonian Conservation and Biology Pub Date : 2016-06-08 DOI: 10.2744/CCB-1192.1

D. Shaver, M. Lamont, Sharon Maxwell, J. Walker, T. Dillingham

引用次数: 8

Hematologic, Morphometric, and Biochemical Analytes of Clinically Healthy Green Sea Turtles (Chelonia mydas) in Peru 秘鲁临床健康绿海龟(Chelonia mydas)的血液学、形态学和生化分析

IF 0.7 4区生物学

Chelonian Conservation and Biology Pub Date : 2016-06-08 DOI: 10.2744/CCB-1160.1

Tania Suarez-Yana, David Montes I., Renato Zúñiga, Jeffrey C. Mangel, J. Alfaro‐Shigueto

引用次数: 9

Sex Ratio of Green Turtle (Chelonia mydas) Hatchlings at Sugözü, Turkey: Higher Accuracy with Pivotal Incubation Duration 土耳其Sugözü绿海龟(Chelonia mydas)幼龟的性别比例:关键孵化时间的准确性更高

IF 0.7 4区生物学

Chelonian Conservation and Biology Pub Date : 2016-06-08 DOI: 10.2744/CCB-1132.1

O. Candan, D. Kolankaya

{"title":"Sex Ratio of Green Turtle (Chelonia mydas) Hatchlings at Sugözü, Turkey: Higher Accuracy with Pivotal Incubation Duration","authors":"O. Candan, D. Kolankaya","doi":"10.2744/CCB-1132.1","DOIUrl":"https://doi.org/10.2744/CCB-1132.1","url":null,"abstract":"Abstract The majority of green turtle (Chelonia mydas) nests in the Mediterranean basin are found on the eastern Mediterranean beaches of Turkey. There are relatively few studies on the sex ratio of green turtle hatchlings for Turkey. In this study, 12 nests on the Sugözü beaches were equipped with temperature data-loggers during the nesting seasons of 2008 and 2009. Temperatures for the entire incubation period and for the middle third were close to the pivotal temperature around 29.0°C. The average incubation duration for nests with known temperature was 52.8 d. An assessment of incubation durations together with histological analysis of 188 gonad samples collected from 103 nests revealed a pivotal incubation duration of 54.3 d and constant temperature equivalent conversion revealed 54 d. This value was identified for the first time for green turtles on the beaches of the eastern Mediterranean in Turkey based on 196 nests with known incubation duration; these nests showed a female-biased sex ratio in 2008 and 2009 (with 54.9% and 56.5%, respectively). Using incubation duration can increase sample size and therefore accuracy of sex ratio predictions without any hatchling sacrifice.","PeriodicalId":50703,"journal":{"name":"Chelonian Conservation and Biology","volume":"15 1","pages":"102 - 108"},"PeriodicalIF":0.7,"publicationDate":"2016-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.2744/CCB-1132.1","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69178925","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 18

Individual Nest Site Selection in Hawksbill Turtles Within and Between Nesting Seasons 玳瑁在筑巢季节内及之间的个别巢址选择

IF 0.7 4区生物学

Chelonian Conservation and Biology Pub Date : 2016-06-08 DOI: 10.2744/CCB-1136.1

Armando J. B. Santos, J. X. L. Neto, D. H. G. Vieira, L. Neto, Cláudio Bellini, Natalia De Souza Albuquerque, G. Corso, B. L. Soares

引用次数: 19

Habitat Use by Five Turtle Species in the Middle Mississippi River 密西西比河中部五种海龟的栖息地利用

IF 0.7 4区生物学

Chelonian Conservation and Biology Pub Date : 2016-06-08 DOI: 10.2744/CCB-1156.1

Andrew P. Braun, Q. Phelps

{"title":"Habitat Use by Five Turtle Species in the Middle Mississippi River","authors":"Andrew P. Braun, Q. Phelps","doi":"10.2744/CCB-1156.1","DOIUrl":"https://doi.org/10.2744/CCB-1156.1","url":null,"abstract":"Abstract Turtles face unique conservation challenges in modern modified river systems. Despite their ecological importance, gaps in knowledge still exist that may hinder their conservation. Turtle by-catch data from the US Army Corps of Engineers' Long-Term Resource Monitoring Program were analyzed for 5 turtle species (false map turtle, Graptemys pseudogeographica; red-eared slider, Trachemys scripta; common snapping turtle, Chelydra serpentina; smooth softshell turtle, Apalone mutica; and spiny softshell turtle, Apalone spinifera) to better understand macrohabitat and mesohabitat use. These species demonstrated differences in habitat use between various macrohabitats, substrata, velocity classes, and depth classes. Common snapping turtles and spiny softshell turtles were captured most often in tributaries, whereas red-eared sliders were captured most often in tributaries and closed side channels. Smooth softshell turtles used open side channels and unstructured main-channel borders most often. False map turtles were found in a variety of macrohabitats, but catch was highest near main-channel wing dikes. Shallow, low-velocity habitat seems most important to turtles. Turtle-specific sampling methods should be employed to learn more about turtles in the middle Mississippi River.","PeriodicalId":50703,"journal":{"name":"Chelonian Conservation and Biology","volume":"15 1","pages":"62 - 68"},"PeriodicalIF":0.7,"publicationDate":"2016-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.2744/CCB-1156.1","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69179002","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Subsistence-Level Chelonian Exploitation on the Rio Negro and One Viable Alternative 对黑人生存水平的剥削和一个可行的选择

IF 0.7 4区生物学

Chelonian Conservation and Biology Pub Date : 2016-06-08 DOI: 10.2744/CCB-1188.1

L. Schneider, C. R. Ferrara, R. Vogt, C. Schaffer

{"title":"Subsistence-Level Chelonian Exploitation on the Rio Negro and One Viable Alternative","authors":"L. Schneider, C. R. Ferrara, R. Vogt, C. Schaffer","doi":"10.2744/CCB-1188.1","DOIUrl":"https://doi.org/10.2744/CCB-1188.1","url":null,"abstract":"Abstract In the Rio Negro, the third-largest tributary of the Amazon, many turtle species have been important commercial and protein resources for centuries for populations of humans living in the region. For many years, this had been a sustainable activity, but nowadays the outlook for turtle populations in the Amazon is unfavorable due to increasing hunting pressure. Based on 20 yrs of conservation work in the Amazon, we report on the pressure faced by turtle populations in the area and report a sustainable chelonian exploitation alternative developed in the Rio Negro region. We describe the materials and the hand processing artisans use to transform natural resources into artworks. Based on this community program model, we discuss the current government support to local communities of the Rio Negro and provide insights on the application of this economic alternative to substitute for turtle commercialization in the Amazon. The outcomes of this manuscript have direct applications for environmental managers, nongovernmental organizations, and policymakers in Brazil and aim to call government and environmental managers to promote turtle conservation in the Amazon, securing economic safety for local communities.","PeriodicalId":50703,"journal":{"name":"Chelonian Conservation and Biology","volume":"15 1","pages":"36 - 42"},"PeriodicalIF":0.7,"publicationDate":"2016-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.2744/CCB-1188.1","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69180228","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 6

Tonic Immobility in Newly Emerged Sea Turtle Hatchlings 新出现的海龟幼龟的补益静止

IF 0.7 4区生物学

Chelonian Conservation and Biology Pub Date : 2016-06-08 DOI: 10.2744/CCB-1185.1

Mohd Uzair Rusli, N. Wu, D. Booth

引用次数: 2

Diet of Kemp's Ridley Sea Turtles Incidentally Caught on Recreational Fishing Gear in the Northwestern Gulf of Mexico 在墨西哥湾西北部被休闲渔具偶然捕获的坎普雷德利海龟的饮食

IF 0.7 4区生物学

Chelonian Conservation and Biology Pub Date : 2016-06-08 DOI: 10.2744/CCB-1191.1

Erin E. Seney

引用次数: 12