نتایج جستجو برای: tiger

تعداد نتایج: 4702  

Journal: :Remote Sensing 2017
Varada S. Shevade Peter V. Potapov Nancy L. Harris Tatiana V. Loboda

Southeast Asia has some of the highest deforestation rates globally, with Malaysia being identified as a deforestation hotspot. The Malayan tiger, a critically endangered subspecies of the tiger endemic to Peninsular Malaysia, is threatened by habitat loss and fragmentation. In this study, we estimate the natural forest loss and conversion to plantations in Peninsular Malaysia and specifically ...

2017
Naris THENGCHAISRI Chayakrit SINTHUSINGHA Surapong ARTHITWONG Panpicha SATTASATHUCHANA

Evidence suggests that non-domesticated felids inherited the same AB-erythrocyte antigens as domestic cats. To study the possible compatibility of tiger blood with that of other endangered felidae, blood samples from captive tigers and domestic cats were subjected to an in vitro study. The objectives of this study were to (1) identify whether the captive tigers had blood type AB and (2) determi...

Journal: :PLoS ONE 2009
Carlos A. Driscoll Nobuyuki Yamaguchi Gila Kahila Bar-Gal Alfred L. Roca Shujin Luo David W. Macdonald Stephen J. O'Brien

The Caspian tiger (Panthera tigris virgata) flourished in Central Asian riverine forest systems in a range disjunct from that of other tigers, but was driven to extinction in 1970 prior to a modern molecular evaluation. For over a century naturalists puzzled over the taxonomic validity, placement, and biogeographic origin of this enigmatic animal. Using ancient-DNA (aDNA) methodology, we genera...

2009
Carl G. Meyer Timothy B. Clark Yannis P. Papastamatiou Nicholas M. Whitney Kim N. Holland

Little is known about the long-term movement patterns of most marine apex predators. A network of acoustic receivers was used to quantify the long-term movements of transmitterequipped tiger sharks Galeocerdo cuvier Péron & Lesueur, 1822 in the Main Hawaiian Islands. Tiger sharks were wide-ranging, swam between islands and patrolled up to 109 km of contiguous coastline. Visits to specific acous...

2010
Gerald S. Post

Tigers, the largest of the felids, are now a globally threatened species with only approximately 3000 wild tigers surviving. India contains about 60% or 2000 of the animals, yet despite aggressive conservation efforts the number of tigers is declining. The causes of the decline are prey depletion, habitat destruction and poaching. Over the past 30 years of tiger conservation efforts in the vari...

2005
Kathrin Spreyer

This paper documents the TIGER 700 RMRS Treebank which has been obtained as the result of a software project. The treebank is a semantic projection from a subset of the TIGER Dependency Bank and was derived automatically, using treebank conversion methods. In a second phase, it will be manually validated and corrections will be made as necessary, supported by an interactive editing tool.

2016
Andrey V. Matalin Vladimir I. Chikatunov

Based on field studies, museums collections and literature sources, the current knowledge of the tiger beetle fauna of Israel and adjacent lands is presented. In Israel eight species occur, one of them with two subspecies, while in the Sinai Peninsula nine species of tiger beetles are now known. In the combined regions seven genera from two tribes were found. The Rift Valley with six cicindelid...

2009
Takanori Isobe Kyoji Shibutani

This paper shows new preimage attacks on reduced Tiger and SHA-2. Indesteege and Preneel presented a preimage attack on Tiger reduced to 13 rounds (out of 24) with a complexity of 2. Our new preimage attack finds a one-block preimage of Tiger reduced to 16 rounds with a complexity of 2. The proposed attack is based on meet-in-themiddle attacks. It seems difficult to find “independent words” of ...

2016
Nicolas J. Dowdy William E. Conner

Tiger moths (Erebidae: Arctiinae) have experienced intense selective pressure from echolocating, insectivorous bats for over 65 million years. One outcome has been the evolution of acoustic signals that advertise the presence of toxins sequestered from the moths' larval host plants, i.e. acoustic aposematism. Little is known about the effectiveness of tiger moth anti-bat sounds in their natural...

2017
Mriganka Shekhar Sarkar Ramesh Krishnamurthy Jeyaraj A. Johnson Subharanjan Sen Goutam Kumar Saha

Background Large carnivores influence ecosystem functions at various scales. Thus, their local extinction is not only a species-specific conservation concern, but also reflects on the overall habitat quality and ecosystem value. Species-habitat relationships at fine scale reflect the individuals' ability to procure resources and negotiate intraspecific competition. Such fine scale habitat choic...

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