Scatterhoarding rodents favor higher predation risks for cache sites: The potential for predators to influence the seed dispersal process Tập 10 Số 3 - Trang 257-266 - 2015
Michael A. Steele, Ghislain Rompré, Jeffrey A. Stratford, Hongmao Zhang, Matthew Suchocki, Shealyn Marino
AbstractScatterhoarding rodents often place caches in the open where pilferage
rates are reduced, suggesting that they tradeoff higher risks of predation for
more secure cache sites. We tested this hypothesis in two study systems by
measuring predation risks inferred from measures of giving‐up densities (GUDs)
at known cache sites and other sites for comparison. Rodent GUDs were measured
with smal... hiện toàn bộ
Physiological adaptations of small mammals to desert ecosystems Tập 4 Số 4 - Trang 357-366 - 2009
Hagit Schwimmer, Abraham Haim
AbstractAdaptations of animals to the xeric environment have been studied in
various taxonomic groups and across several deserts. Despite the impressive data
that have been accumulated, the focus in most of these studies is mainly on the
significance of one variable at a time. Here, we attempt to integrate between
responses of several physiological systems, challenged by increasing diet and
water ... hiện toàn bộ
Sumatran tiger (Panthera tigris sumatrae): A review of conservation status Tập 5 Số 4 - Trang 313-323 - 2010
Hariyo T. Wibisono, Wulan Pusparini
AbstractThe majority of wild Sumatran tigers are believed to live in 12 Tiger
Conservation Landscapes covering approximately 88 000 km2. However, the actual
distribution of tigers across Sumatra has never been accurately mapped. Over the
past 20 years, conservation efforts focused on the Sumatran tigers have
increased, but the population continues to decline as a result of several key
threats. To ... hiện toàn bộ
Cultivated walnut trees showed earlier but not final advantage over its wild relatives in competing for seed dispersers Tập 12 Số 1 - Trang 12-25 - 2017
Hongmao Zhang, Wei Chu, Zhibin Zhang
AbstractLittle is known about seeding regeneration of cultivated trees compared
to wild relatives in areas where seed dispersers are shared. Here, we
investigated the differences in seed fates of cultivated walnut (Juglans regia)
and wild Manchurian walnut (Juglans mandshurica) trees under rodent predation
and dispersal. J. regia seeds have higher nutritional value (large size, mass
and kernel mas... hiện toàn bộ
Differentiation in seed hoarding among three sympatric rodent species in a warm temperate forest Tập 3 Số 2 - Trang 134-142 - 2008
Jiqi Lu, Zhibin Zhang
AbstractAlthough seed hoarding by rodents has been extensively studied,
differentiation in seed‐hoarding behaviors among sympatric rodent species has
not been well investigated. Using semi‐natural enclosures, we demonstrated that
three sympatric rodent species showed clear differentiation in food selection,
scatter versus larder hoarding behaviors and eating behaviors when offered seeds
of four pl... hiện toàn bộ
Distinctive diet‐tissue isotopic discrimination factors derived from the exclusive bamboo‐eating giant panda Tập 11 Số 6 - Trang 447-456 - 2016
Han Han, Wei Wei, Yonggang Nie, Wenliang Zhou, Yibo Hu, Qi Wu, Fuwen Wei
AbstractStable isotope analysis is very useful in animal ecology, especially in
diet reconstruction and trophic studies. Differences in isotope ratios between
consumers and their diet, termed discrimination factors, are essential for
studies of stable isotope ecology and are species‐specific and tissue‐specific.
Given the specialized bamboo diet and clear foraging behavior, here, we
calculated dis... hiện toàn bộ
Sagittal crest morphology decoupled from relative bite performance in Pleistocene tapirs (Perissodactyla: Tapiridae) Tập 18 Số 2 - Trang 254-277 - 2023
Lisa Van Linden, Kim STOOPS, Larissa Costa Coimbra Santos Dumbá, Mário Alberto Cozzuol, Jamie A. MacLaren
AbstractBite force is often associated with specific morphological features,
such as sagittal crests. The presence of a pronounced sagittal crest in some
tapirs (Perissodactyla: Tapiridae) was recently shown to be negatively
correlated with hard‐object feeding, in contrast with similar cranial structures
in carnivorans. The aim of this study was to investigate bite forces and
sagittal crest height... hiện toàn bộ
Làm sạch kho hạt giống của cây bách phương tây bởi các động vật gặm nhấm phân thủy, thay đổi theo loại vi mô và loại tán Dịch bởi AI Tập 17 Số 2 - Trang 192-205 - 2022
Lindsay A. Dimitri, William S. Longland
**Mô tả** Các loài gặm nhấm phân thủy lưu trữ hạt giống khắp nơi trong khu vực
hoạt động của chúng trong những hầm chứa nông cạn trên bề mặt, khác với những
hạt giống dự trữ sâu trong hang ổ, rất khó bảo vệ. Các hạt giống đã được chôn
thường bị trộm cắp bởi các loài gặm nhấm khác và hoặc được tái chôn, ăn hoặc đưa
vào kho dự trữ. Những chuyển động của hạt giống như vậy có thể ảnh hưởng đến quá
trì... hiện toàn bộ
#cây juniper phương tây #động vật gặm nhấm phân thủy #trộm cắp hạt giống #sinh thái vi mô #cây bụi #cây gỗ #chuột kangaroo California #sự phân tán hạt giống #phát triển cây dương sỉ #rừng thông juniper