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Large mammals are at high risk of extinction globally. To understand the consequences of their demise for community assembly, we tracked community structure through the end-Pleistocene megafaunal extinction in North America. We decomposed the effects of biotic and abiotic factors by analyzing co-occurrence within the mutual ranges of species pairs. Although shifting climate drove an increase in niche overlap, co-occurrence decreased, signaling shifts in biotic interactions. Furthermore, the effect of abiotic factors on co-occurrence remained constant over time while the effect of biotic factors decreased. Biotic factors apparently played a key role in continental-scale community assembly before the extinctions. Specifically, large mammals likely promoted co-occurrence in the Pleistocene, and their loss contributed to the modern assembly pattern in which co-occurrence frequently falls below random expectations.
This article was published in the following journal.
Name: Science (New York, N.Y.)
To investigate proliferative reorganization in the bilateral corticospinal tract (CST) and functional reorganization in the sensorimotor network (SMN) after internal capsule stroke, and to examine the...
The Palorchestidae are a family of marsupial megafauna occurring across the eastern Australian continent from the late Oligocene through to their extinction in the Late Pleistocene. The group is known...
This study investigates permanent maxillary and mandibular premolar root structural organization in East Asian Middle Pleistocene hominins. In addition to reporting and analyzing the linear and volume...
Higher-order genomic architecture varies according to cell type and changes dramatically during differentiation. One of the remarkable examples of spatial genomic reorganization is the rod photorecept...
Complex projectiles-propulsion via mechanical aid-are considered an important technological innovation, with possible relevance for the successful Out-of-Africa dispersal of our species. Conclusive ev...
This study will test the impact of implementing the Communities That Helping to End Addiction Long-term (HEAL) intervention on opioid overdose deaths within 67 highly affected communities ...
The Community Youth Development Study is an experimental test of the Communities That Care (CTC) prevention planning system. It is designed to find out if communities that use the CTC sys...
Purpose: To evaluate the effect of robotic gait therapy for brain reorganization in hemiplegia patients.
The purpose of this study is to reveal the effects of computer-aided cognitive-auditory training on cerebral reorganization in schizophrenia.
The purpose of this study is to reveal the specific effects of computer-aided cognitive training on cerebral reorganization in schizophrenia
An ethnic group with shared religious beliefs in PROTESTANISM. Originating in Switzerland in the late 1600s, and first migrating to the mid-Atlantic, they now live throughout Eastern and Mid-Western United States and elsewhere. Communities are usually close-knit and marriage is within the community.
Large mammals in the family Elephantidae, with columnar limbs, bulky bodies, and elongated snouts. They are the only surviving members of the PROBOSCIDEA MAMMALS.
A family of flightless, running BIRDS, in the order Casuariiformes. The emu is the only surviving member of the family. They naturally inhabit forests, open plains, and grasslands in Australia.
A small aquatic oviparous mammal of the order Monotremata found in Australia and Tasmania.
Persons who have experienced a prolonged survival after serious disease or who continue to live with a usually life-threatening condition as well as family members, significant others, or individuals surviving traumatic life events.