首页 | 本学科首页   官方微博 | 高级检索  
相似文献
 共查询到20条相似文献,搜索用时 125 毫秒
1.
刘芳  李迪强  吴记贵 《生态学报》2012,32(3):730-739
红外相机是监测野生动物的有效工具,目前广泛用于兽类资源调查以及动物损害、鸟巢生态学、种群评估、行为生态学等研究领域。为了调查北京松山国家级自然保护区的野生动物,于2010年5—12月采用红外相机进行系统调查,在210个位点放置了红外相机,每台相机在每个地点上放置一个月。研究期间共拍摄到照片2203张,其中73%为兽类,12%为鸟类,13%为工作人员,2%为其它人员。共鉴定出17种兽类(分属5目10科)以及36种鸟类(分属5目17科)。兽类中拍摄率最高的前5种动物分别是岩松鼠(Sciurotamias davidianus)、猪獾(Arctonyx collaris)、豹猫(Prionailurus bengalensis)、狗獾(Meles meles)和貉(Nyctereutes procyonoides),鸟类中拍摄率最高的前5种动物分别是紫啸鸫(Myophonus caeruleus)、雉鸡(Phasianus colchicus)、松鸦(Garrulus glandarius)、勺鸡(Pucrasia macrolopha)和宝兴歌鸫(Turdus mupinensis)。红外相机在不同海拔、不同植被类型以及不同月份所拍摄动物的拍摄率不同:在1000—1400m的海拔段,拍摄率显著高于低海拔(600—1000m)以及中高海拔(1400—1700m);在阔叶林中的拍摄率最高,在针叶林、针阔混交林和灌丛中的拍摄率相似;秋季(8—10月)拍摄率较高,夏季(6—7月)次之,冬季(11—12月)最低。红外相机拍摄到的累积物种数与相机放置的时间成上升曲线,但曲线的增长速率逐渐变缓。研究表明红外相机适合于调查和监测大中型兽类和部分鸟类,所采集的动物数据以及拍摄的图片和视频资料将为保护区的监测、科研和环境教育提供资料。讨论了应用红外相机调查和监测野生动物的技术细节。  相似文献   

2.
2017年3月—2018年3月期间,采用红外相机技术调查了桃红岭梅花鹿国家级自然保护区内鸟类和兽类的物种多样性。红外相机监测期间,共累计4442个相机日,获得野生动物独立有效照片1003张,其中兽类独立有效照片683张,共4目9科16种;鸟类独立有效照片320张,共9目23科46种;保护区内兽类相对丰富度最高的是小麂(Muntiacus reevesi),鸟类丰富度最高的是黑领噪鹛(Garrulax perspicillatus);其中国家Ⅰ级保护动物有2种,梅花鹿(Cervus nippon)和白颈长尾雉(Syrmaticus ellioti);国家Ⅱ级保护动物有6种,分别为小灵猫(Viverricula indica)、勺鸡(Pucrasia macrolopha)、白鹇(Lophura nycthemera)、草鸮(Tyto longimembris)、红角鸮(Otus sunia)和松雀鹰(Accipiter virgatus)。红外相机在灌丛中拍摄率最高,在草甸中拍摄率最低。通过稀疏外推曲线对物种多样性进行估计可得,保护区实际的物种数远大于监测到的物种数,因此有待继续进行长期监测。通过物种与相机位点的PCA排序图可知,各个相机位点和物种的相关性较强。调查结果为保护区提供了重要的兽类和鸟类资源信息,为保护区对野生动物的有效管理和长期监测提供了数据支持。  相似文献   

3.
兽类和鸟类多样性的监测是生物多样性保护中的重要一环。2017年4月至2018年5月,按照网格法在位于陕西省西安市周至县的老县城国家级自然保护区布设了36台红外相机,对保护区内大中型兽类和林下鸟类多样性进行调查。累积7 835个相机工作日,获得野生动物独立有效照片1 915张,共鉴定出32种鸟类和兽类物种,隶属8目18科,其中被IUCN红色名录评估为濒危(EN)、易危(VU)和近危(NT)的物种分别有2种、4种和3种。相对丰富度指数最高的为羚牛(Budorcas taxicolor)(IRA=36.81);夏季(7.68)和秋季(7.81)物种拍摄率大于春季(4.65)和冬季(4.30),不同季节拍摄到的物种数和物种多样性指数差异不显著。不同海拔段物种拍摄率、物种数和物种多样性指数均不具有明显差异。濒危物种中的羚牛不同海拔段拍摄率存在明显差异。主成分分析表明,拍摄物种与相机位点之间相关性较强,这与相机位点附近的生境条件有关。研究结果初步掌握了老县城保护区内大中型兽类和林下鸟类种类组成、相对多度及分布状况,为未来保护区野生动物资源保护和管理提供基础资料。  相似文献   

4.
野生动物多样性的有效保护与管理,需要大范围、长时间的系统监测网络支持。红外相机调查技术近年来已成为自然保护区鸟兽调查的最有效工具之一,为了解和掌握区域性乃至全国性的生物多样性现状,提供了最直接和最基础的数据。长青国家级自然保护区位于秦岭南坡,地处秦岭自然保护区群的核心地带。自2008年至2011年,使用被动式红外触发相机技术调查大中型兽类与鸟类的本底。共完成有效调查位点435个,相机工作日15 767 d。获得兽类有效拍摄3 282次,记录到分属5目12科的21种野生兽类和1种家畜,其中国家Ⅰ级和Ⅱ级重点保护野生动物各有5种,被IUCN物种红色名录评估为濒危(EN)、易危(VU)、近危(NT)的物种分别有2、3、4种。食肉目和偶蹄目是本次调查兽类记录中物种数量(分别有9种和7种)和有效拍摄数(分别占兽类有效拍摄数的13.5%和84.0%)最高的两个类群,食肉目中相对多度指数最高的物种是大熊猫(Ailuropoda melanoleuca,12.30),偶蹄目中最高的物种是羚牛(Budorcas taxicolor,114.04)。保护区内大型兽类(食肉目和偶蹄目)物种多样性沿海拔梯度,大体呈现中部高、两侧低的单峰模式,海拔1 600-2 200 m的中等海拔段是大型兽类多样性最高的区域。鸟类有效拍摄191次,记录到分属4目8科的17种鸟类,其中国家Ⅱ级重点保护野生动物物种8种。鸡形目雉科鸟类是有效拍摄数最高的类群,占全部鸟类拍摄数的79.8%。调查中记录到的林猬(Mesechinus hughi)和鹰雕(Spizaetus nipalensis)为长青自然保护区的新记录种。调查结果提供了较为全面的区内大中型兽类和鸟类群落的本底信息,为后续的保护管理规划和长期监测提供了数据支持和指导。  相似文献   

5.
物种编目评估是生物多样性研究和保护的基础,开展野生动物多样性监测对更新本底物种编目资料至关重要。2016年4月—2018年12月,利用红外相机技术对四川雪宝顶国家级自然保护区内的兽类和鸟类多样性开展监测研究。研究期间共布设169个相机监测位点,覆盖109个公里网格,共计31 148个相机日,共获得照片27 402张,视频19 621段,物种拍摄记录数16 696份,独立有效记录数2 845次,共鉴定出野生鸟兽7目20科51种,其中兽类4目13科22种,鸟类3目7科29种。国家重点保护野生动物共计18种,其中国家Ⅰ级重点保护兽类4种、鸟类2种,国家Ⅱ级重点保护兽类7种、鸟类5种; IUCN红色名录濒危(EN)物种2种,易危(VU)物种6种,近危(NT)物种3种。兽类中中华斑羚Naemorhedus griseus的相对多度指数和网格占有率在历年的监测结果中均最高,而鸟类中最高的是红腹角雉Tragopan temminckii和血雉Ithaginis cruentus。共计33种鸟兽物种在历年监测中均被拍摄到,有12种仅在其中2年监测中被拍摄到,有6种仅在其中1年监测中被拍摄到。本研究为保护区成立以来首次利用红外相机技术对区内野生鸟兽物种的监测记录,为更新本底物种编目及后续科学研究与保护管理积累了重要的基础资料。  相似文献   

6.
为了调查北京百花山国家级自然保护区旅游线路周边野生动物分布和活动规律,于2015年7月—2016年9月,铺设20台红外相机,共拍到有效照片3761张,其中兽类2813张,鸟类643张。鉴定出兽类14种(分属5目9科);鸟类39种(分属4目16科),其中4种兽类和8种鸟类是保护区新纪录。红外相机在不同的生境类型、海拔以及不同月份的拍摄率都不同,阔叶林的动物物种数和拍摄率远远高于其他生境类型;较低海拔(1150—1400 m)区域的拍摄率高于中间海拔(1400—1600 m)和较高海拔(1600—1800 m);动物集中在5—10月份活动,这几个月的拍摄率高于其他月份。而拍摄率与多样性指数往往不一致,阔叶林低于针叶林和灌木林;中间海拔最高,较低海拔最低。野生动物活动活跃的月份与旅游旺季在很大程度上是重合的,而野猪(Sus scrofa)、狗獾(Meles meles)、豹猫、猪獾和花面狸(Paguma larvata)这五种潜在危险动物,表现出明显的夜行性,对白天游客的威胁性不大,但存在潜在危险性。通过研究,有助于保护区制定相应的管控方案和建立危险预警机制。  相似文献   

7.
为了调查北京市雾灵山自然保护区兽类资源,2013年7月至2014年5月,在雾灵山32个位点布放红外相机进行系统调查,累积相机工作日3 630 d,共拍摄到兽类有效照片494张,鉴定出10种动物,包括:狍(Capreolus capreolus)、斑羚(Nemorhaedus goral)、猪獾(Arctonyx collaris)、岩松鼠(Sciurotamias davidianus)、野猪(Sus scrofa)、狗獾(Meles meles)、豹猫(Felis bengalensis)、花鼠(Tamias sibiricus)、草兔(Lepus capensis)和黄鼬(Mustela sibirica),隶属于4目7科;从分布型来看,这10种兽类主要以古北型为主(占70%)。常拍种有狍、岩松鼠、斑羚和猪獾;较常拍种有野猪、狗獾、豹猫、花鼠、草兔;偶拍种有黄鼬。本文还对不同海拔和不同植被类型动物相对丰富度、累积拍摄物种数与相机工作日关系及兽类G-F指数等进行了探讨。  相似文献   

8.
黑龙江凉水和丰林保护区鸟类和兽类多样性   总被引:2,自引:0,他引:2  
包欣欣  刘丙万 《生态学报》2018,38(2):502-510
2013年12月至2015年5月、2014年4月至2015年5月利用红外相机分别对黑龙江凉水保护区和丰林保护区鸟兽多样性进行研究:凉水保护区累计10736个捕获日,获得有效照片总数14726张,兽类独立照片514张,共4目7科11种,鸟类独立照片107张,共4目8科11种;丰林保护区累计7460个捕获日,获得有效照片总数13677张,兽类独立照片638张,共3目6科9种,鸟类独立照片166张,共4目10科16种。凉水保护区实际监测到的鸟兽物种数约为全部鸟兽物种的70%—78%;丰林保护区实际监测到的鸟兽物种数目全部鸟兽物种的80%—89%,保护区内大部分物种被监测到。凉水和丰林保护区兽类相对丰富度最高的均为松鼠(Sciurus vulgaris)和花鼠(Eutamias sibiricus),其次为西伯利亚狍(Capreolus capreolu),鸟类相对丰富度最高的普通鳾(Sitta europaea)和白腹鸫(Turdus pallidus);物种多样性指数显示鸟兽多样性无显著差异;鸟、兽群落相似性指数Cs=0.621,凉水和丰林保护区鸟兽物种有较多重叠。利用红外相机对凉水和丰林保护区鸟兽多样性进行研究发现,兽类中对夜行性小型啮齿类监测不足,监测到的鸟类以林下活动为主。  相似文献   

9.
利用红外相机对浙江清凉峰国家级自然保护区龙塘山区域鸟兽物种多样性和丰富度进行调查。于2013年6月—2014年10月,在12个位点放置红外相机,每台相机在每个位点放置时间为7~17个月。共获得鸟兽有效照片1 840张,有效照片中兽类占69.35%,鸟类占30.65%。经鉴定,兽类有9种,鸟类有14种。兽类中拍摄率最高的是小麂Muntiacus reevesi、花面狸Paguma larvata和黑麂Muntiacus crinifrons,鸟类中拍摄率最高的是白鹇Lophura nycthemera、勺鸡Pucrasia macrolopha和白颈长尾雉Syrmaticus ellioti。红外相机在不同海拔和植物群落中的拍摄率各不相同,1 018~1 260 m海拔段高于811~995 m;在常绿落叶阔叶混交林中的拍摄率最高,针阔混交林最低。研究表明,红外相机陷阱技术对于调查和监测大中型兽类和部分鸟类具有一定优越性,所采集数据及图片对保护区科研监测具有重要意义。  相似文献   

10.
雅鲁藏布大峡谷地区海拔高差大,开发程度较低,生物多样性高,生态系统保存相对完整,近年来不断有新的物种和记录发现。2020年10月至2021年11月,我们在西藏墨脱县、波密县和米林县雅鲁藏布大峡谷区域内布设红外相机进行生物多样性本底调查,选择了7个不同海拔样区,累计设置116个红外相机位点(海拔范围646–4,360 m),监测24,741个相机工作日,获得独立有效视频12,010段。近一年的调查共记录到物种136种,其中可确定物种的兽类37种,分属4目14科,此外还记录到难以定种的鼠兔、鼠类和蝙蝠;鸟类99种,分属9目28科;记录到国家I级重点保护野生动物共14种,国家Ⅱ级重点保护野生动物37种。本次拍摄到10个之前红外相机监测未拍摄到的兽类和雉类物种,包括林麝(Moschus berezovskii)、马麝(M. chrysogaster)、棕熊(Ursus arctos)、亚洲狗獾(Meles leucurus)、黄鼬(Mustela sibirica)、灰头小鼯鼠(Petaurista caniceps)、黑白飞鼠(Hylopetes alboniger)、灰鼯鼠(Petauri...  相似文献   

11.
Camera traps are a popular tool for monitoring wildlife though they can fail to capture enough morphological detail for accurate small mammal species identification. Camera trapping small mammals is often limited by the inability of camera models to: (i) record at close distances; and (ii) provide standardised photos. This study aims to provide a camera trapping method that captures standardised images of the faces of small mammals for accurate species identification, with further potential for individual identification. A novel camera trap design coined the ‘selfie trap’ was developed. The selfie trap is a camera contained within an enclosed PVC pipe with a modified lens that produces standardised close images of small mammal species encountered in this study, including: Brown Antechinus (Antechinus stuartii), Bush Rat (Rattus fuscipes) and Sugar Glider (Petaurus breviceps). Individual identification was tested on the common arboreal Sugar Glider. Five individual Sugar Gliders were identified based on unique head stripe pelage. The selfie trap is an accurate camera trapping method for capturing detailed and standardised images of small mammal species. The design described may be useful for wildlife management as a reliable method for surveying small mammal species. However, intraspecies individual identification using the selfie trap requires further testing.  相似文献   

12.
A comprehensive survey on large mammal diversity from a disturbed forest in Peninsular Malaysia has been carried out for over a period of 21 months. A total of 24 camera traps which accumulated to 5972 trap days. A total of 33 species 27 genera and 15 families of mammals were recorded via camera trapping and observations. The use of camera traps provides detailed information on diversity of some cryptic and secretive mammals. Secondary forest may support a wide diversity of mammals at a stable condition where intrusion, excision and fragmentation are reduced or avoided. The threats to mammals in the study are also discussed.  相似文献   

13.
Studying large mammal species in tropical forests is a conservation challenge with species’ behavior and ecology often increasing the probability of non‐detection during surveys. Consequently, knowledge of the distribution, status, and natural history of many large mammal species in Southeast Asia is limited. I developed occupancy models from camera‐trapping data, thereby accounting for imperfect detection at sampling sites, to clarify the status and habitat requirements of four globally threatened or near threatened large mammals (banteng Bos javanicus, gaur Bos gaurus, dhole Cuon alpinus, and leopard Panthera pardus) in Mondulkiri Protected Forest, eastern Cambodia. Camera traps were operational for >3500 trap nights with 202 photographic encounters of the four study species. Model averaged occupancy estimates were between 5 percent (leopard) and 140 percent (gaur) higher than naive estimates (i.e., proportion of camera‐trap sites species recorded from) thus highlighting the importance of accounting for detectability during conservation surveys. I recommend the use of an occupancy framework when using camera‐trap data to study the status, ecology, and habitat preferences of poorly known and elusive species. The results highlight the importance of mixed deciduous and semi‐evergreen forest for wild cattle in eastern Cambodia and I emphasize that these habitats must be considered in conservation planning across the Lower Mekong Dry Forest Ecoregion.  相似文献   

14.
Terrestrial mammals are a key component of tropical forest communities as indicators of ecosystem health and providers of important ecosystem services. However, there is little quantitative information about how they change with local, regional and global threats. In this paper, the first standardized pantropical forest terrestrial mammal community study, we examine several aspects of terrestrial mammal species and community diversity (species richness, species diversity, evenness, dominance, functional diversity and community structure) at seven sites around the globe using a single standardized camera trapping methodology approach. The sites-located in Uganda, Tanzania, Indonesia, Lao PDR, Suriname, Brazil and Costa Rica-are surrounded by different landscape configurations, from continuous forests to highly fragmented forests. We obtained more than 51 000 images and detected 105 species of mammals with a total sampling effort of 12 687 camera trap days. We find that mammal communities from highly fragmented sites have lower species richness, species diversity, functional diversity and higher dominance when compared with sites in partially fragmented and continuous forest. We emphasize the importance of standardized camera trapping approaches for obtaining baselines for monitoring forest mammal communities so as to adequately understand the effect of global, regional and local threats and appropriately inform conservation actions.  相似文献   

15.
The need for long-term biodiversity monitoring using standardized protocols led to the creation of the Tropical Ecology, Assessment and Monitoring (TEAM) initiative. At some 50 field stations in tropical forests around the world, TEAM will monitor various taxa such as ants, birds, butterflies, medium and large terrestrial mammals, primates, litter fall, and trees, as well as landscape change in nine tropical biodiversity hotspots and three tropical wilderness areas. The TEAM terrestrial mammal program calls for using a grid of camera phototraps to monitor long-term trends in densities and occupancy rates of species that can or cannot be uniquely identified, respectively. We describe the TEAM camera phototrapping program and provide results for the first TEAM site–Caxiuanã National Forest in northern Brazil. An intensive one year camera trapping effort was carried out to determine which months were most suitable for long-term monitoring. Fifteen species of medium and large terrestrial mammals and two large birds were recorded, including three xenarthrans, five carnivores, one perissodactyle, three artiodactyles, two rodents, and one marsupial. The medium and large terrestrial mammal diversity was well represented during two consecutive wet and dry months, respectively. We also recorded activity patterns for all species photographed by our camera traps more than 10 times.  相似文献   

16.
Camera traps are a powerful and increasingly popular tool for mammal research, but like all survey methods, they have limitations. Identifying animal species from images is a critical component of camera trap studies, yet while researchers recognize constraints with experimental design or camera technology, image misidentification is still not well understood. We evaluated the effects of a species’ attributes (body mass and distinctiveness) and individual observer variables (experience and confidence) on the accuracy of mammal identifications from camera trap images. We conducted an Internet‐based survey containing 20 questions about observer experience and 60 camera trap images to identify. Images were sourced from surveys in northern Australia and included 25 species, ranging in body mass from the delicate mouse (Pseudomys delicatulus, 10 g) to the agile wallaby (Macropus agilis, >10 kg). There was a weak relationship between the accuracy of mammal identifications and observer experience. However, accuracy was highest (100%) for distinctive species (e.g. Short‐beaked echidna [Tachyglossus aculeatus]) and lowest (36%) for superficially non‐distinctive mammals (e.g. rodents like the Pale field‐rat [Rattus tunneyi]). There was a positive relationship between the accuracy of identifications and body mass. Participant confidence was highest for large and distinctive mammals, but was not related to participant experience level. Identifications made with greater confidence were more likely to be accurate. Unreliability in identifications of mammal species is a significant limitation to camera trap studies, particularly where small mammals are the focus, or where similar‐looking species co‐occur. Integration of camera traps with conventional survey techniques (e.g. live‐trapping), use of a reference library or computer‐automated programs are likely to aid positive identifications, while employing a confidence rating system and/or multiple observers may lead to a collection of more robust data. Although our study focussed on Australian species, our findings apply to camera trap studies globally.  相似文献   

17.
Understanding the species diversity patterns along elevational gradients is critical for biodiversity conservation in mountainous regions. We examined the elevational patterns of species richness and turnover, and evaluated the effects of spatial and environmental factors on nonvolant small mammals (hereafter “small mammal”) predicted a priori by alternative hypotheses (mid‐domain effect [MDE], species–area relationship [SAR], energy, environmental stability, and habitat complexity]) proposed to explain the variation of diversity. We designed a standardized sampling scheme to trap small mammals at ten elevational bands across the entire elevational gradient on Yulong Mountain, southwest China. A total of 1,808 small mammals representing 23 species were trapped. We observed the hump‐shaped distribution pattern of the overall species richness along elevational gradient. Insectivores, rodents, large‐ranged species, and endemic species richness showed the general hump‐shaped pattern but peaked at different elevations, whereas the small‐ranged species and endemic species favored the decreasing richness pattern. The MDE and the energy hypothesis were supported, whereas little support was found for the SAR, the environmental stability hypothesis, and the habitat complexity. However, the primary driver(s) for richness patterns differed among the partitioning groups, with NDVI (the normalized difference vegetation index) and MDE being the most important variables for the total richness pattern. Species turnover for all small mammal groups increased with elevation, and it supported a decrease in community similarity with elevational distance. Our results emphasized for increased conservation efforts in the higher elevation regions of the Yulong Mountain.  相似文献   

18.
Aim Small mammal species richness and relative abundance vary along elevational gradients, but there are different patterns that exist. This study reports the patterns of distribution and abundance of small mammals along the broader elevational gradient of Mt. Qilian range. Location The study was conducted in the Mt. Qilian range, north‐western China, from June to August 2001. Methods Removal trapping was conducted using a standardized technique at 7 sites ranging between 1600 and 3900 m elevation within three transects. Correlation, regression and graphical analyses were used to evaluate the diversity patterns along this elevational gradient. Results In total, 586 individuals representing 18 nonvolant small mammal species were collected during 20 160 trap nights. Species composition was different among the three transects with 6 (33%) of the species found only within one transect. Elevational distribution and relative abundance of small rodents showed substantial spatial variation, with only 2 species showing nonsignificant capture frequencies across elevations. Despite these variations, some general patterns of elevational distribution emerged: humped‐shape relationships between species diversity and elevation were noted in all three transects with diversity peaks at middle elevations. In addition, relative abundance was negatively correlated with elevation. Conclusions Results indicate that maximum richness and diversity of nonvolant small mammals occurred at mid‐elevations where several types of plants reached their maximum diversity and primary productivity, and where rainfall and humidity reached a maximum. It is demonstrated that the mid‐elevation bulge is a general feature of at least a large portion of the biota on the Mt. Qilian range.  相似文献   

19.
We placed camera traps for a month at sixty locations in Bwindi Impenetrable National Park to determine the species composition and distribution of medium‐to‐large terrestrial vertebrates. A total of 15912 images were recorded from 1800 camera trap days. These provided a total of 625 and 338 camera events when filtered by hour and day, respectively. Twenty mammal species were recorded from 594 and 314 camera events by hour and day, respectively. Four bird species were recorded from 31 and 24 camera events by hour and day, respectively. The African golden cat Profelis aurata Temminck was recorded from 27 and nineteen camera events by hour and day, respectively. The black‐fronted duiker Cephalophus nigrifrons Gray was most frequently photographed with 179 and 65 camera events by hour and day, respectively. Analyses reveal two species possessed a significantly interior‐biased distribution. One species showed an edge‐biased pattern. Five species were detected to have significantly biased altitudinal distributions with higher elevations. Distance to park edge and elevation can significantly influence species distribution. The selective use of the park limits the area that each species utilizes, with implications for maximum population sizes and viability. Our observations provide a baseline for long‐term terrestrial vertebrate monitoring in Bwindi.  相似文献   

20.
Medium-to-large mammals within tropical forests represent a rich and functionally diversified component of this biome; however, they continue to be threatened by hunting and habitat loss. Assessing these communities implies studying species’ richness and composition, and determining a state variable of species abundance in order to infer changes in species distribution and habitat associations. The Tropical Ecology, Assessment and Monitoring (TEAM) network fills a chronic gap in standardized data collection by implementing a systematic monitoring framework of biodiversity, including mammal communities, across several sites. In this study, we used TEAM camera trap data collected in the Udzungwa Mountains of Tanzania, an area of exceptional importance for mammal diversity, to propose an example of a baseline assessment of species’ occupancy. We used 60 camera trap locations and cumulated 1,818 camera days in 2009. Sampling yielded 10,647 images of 26 species of mammals. We estimated that a minimum of 32 species are in fact present, matching available knowledge from other sources. Estimated species richness at camera sites did not vary with a suite of habitat covariates derived from remote sensing, however the detection probability varied with functional guilds, with herbivores being more detectable than other guilds. Species-specific occupancy modelling revealed novel ecological knowledge for the 11 most detected species, highlighting patterns such as ‘montane forest dwellers’, e.g. the endemic Sanje mangabey (Cercocebus sanjei), and ‘lowland forest dwellers’, e.g. suni antelope (Neotragus moschatus). Our results show that the analysis of camera trap data with account for imperfect detection can provide a solid ecological assessment of mammal communities that can be systematically replicated across sites.  相似文献   

设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号