Results 171 to 180 of about 664,178 (345)

Aerospace systems and mission analysis research - Solar electric space mission analysis Final report [PDF]

open access: yes
Mission analysis for solar electric propelled spacecraft on Mars Orbiter, Jupiter flyby, and asteroid belt exploration ...
Handelsman, M.   +2 more
core   +1 more source

Modelling the surprising recolonisation of an understudied aquatic mammal in a highly urbanised area: fortune favoured the smooth‐coated otter in Singapore

open access: yesWildlife Biology, EarlyView.
Ever‐growing human activities present an active and continuing threat to many species throughout the world. Nevertheless, concerted conservation efforts in some regions have balanced these threats and allowed endangered species to recolonise former parts of their original ranges and reverse their decline.
Kilian Hughes   +2 more
wiley   +1 more source

Bottom-Up Space Use With Top-Down Temporal Risk Buffering in Arid Herbivore Communities. [PDF]

open access: yesEcol Evol
Heydinger J   +5 more
europepmc   +1 more source

A high‐altitude thermal infrared method for estimating moose abundance and demography in Rocky Mountain National Park, USA

open access: yesWildlife Biology, EarlyView.
Resource managers require accurate estimates of large herbivore abundance and demography to maintain ecological integrity. Common methods to count these species, including observations from low altitude helicopter flights, may conflict with other protected area management objectives and struggle to produce precise estimates for more cryptic species. To
Hanem G. Abouelezz, N. Thompson Hobbs
wiley   +1 more source

Citizen science project on urban canids provides different results from camera traps but generates interest and revenue

open access: yesWildlife Biology, EarlyView.
As urbanization increases, wildlife increasingly encounters people. Coyotes Canis latrans and red foxes Vulpes vulpes are two canid species that have readily adapted to urban environments. Citizen science has emerged as a low‐cost method of collecting data on urban‐adapted species that can benefit management agencies but may provide different results ...
Neville F. Taraporevala   +2 more
wiley   +1 more source

Population changes and diet quality for California sea lions from frequency of occurrence and index of importance data.

open access: green
Ana Lucía Pozas-Franco (20858792)   +4 more
openalex   +1 more source

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