Results 71 to 80 of about 248,783 (286)

Reproductive performance of resident and migrant males, females and pairs in a partially migratory bird [PDF]

open access: yes, 2017
We thank everyone from the Centre for Ecology & Hydrology (CEH) who contributed to data collection, and Scottish Natural Heritage for access to the Isle of May National Nature Reserve.
Burthe, Sarah J.   +6 more
core   +3 more sources

Addressing biases in sliding window analysis gives new insight into the response of parturition date to weather in a wild mammal

open access: yesOikos, EarlyView.
Animal breeding phenology in temperate and high latitude regions is often predicted by weather variables, such as temperature. Much work on this topic has focused on taxonomic groups that employ adaptive plastic responses to annual variation in an environmental cue, with analytical approaches developed to determine when weather has an effect and the ...
Kirsty H. Macphie   +6 more
wiley   +1 more source

Understanding the Snow Cover Climatology over Turkey from ERA5-Land Reanalysis Data and MODIS Snow Cover Frequency Product

open access: yesGeosciences, 2023
Understanding the distribution, patterns, and characteristics of snowfall and snow cover within a given region over extended periods is important. Snow climatology provides valuable insights into the seasonal and long-term variations in snowfall, helping
Zuhal Akyurek   +3 more
doaj   +1 more source

Green-Down Protocol [PDF]

open access: yes, 2003
The purpose of this resource is to observe plant green-down and report greendown data to help validate estimates of the end of the plant growing season. Students monitor the change in color of selected leaves of trees, shrubs or grasses.
The GLOBE Program, University Corporation for Atmospheric Research (UCAR)
core  

Shifts in phenology influence synchrony of flowering plants and their pollinators along an elevation gradient

open access: yesOikos, EarlyView.
Climatic conditions alter the phenology of species, which may threaten the synchrony of biotic interactions. However, how phenological synchrony across entire communities of plants and their pollinators responds to varying environmental conditions remains poorly understood.
Mikko Tiusanen   +2 more
wiley   +1 more source

Study on the Phenological Changes of Snow and Lake Ice in Qinghai Lake Basin based on MODIS Data

open access: yesGaoyuan qixiang
Phenological changes are of great significance to the study of climate response and ecological environment.Based on the MODIS V6 snow product and reflectivity product in the past 20 years, the snow and lake ice phenology in the Qinghai Lake Basin were ...
Jiaojiao SHEN   +4 more
doaj   +1 more source

Mapping Crop Cycles in China Using MODIS-EVI Time Series [PDF]

open access: yes, 2014
As the Earth’s population continues to grow and demand for food increases, the need for improved and timely information related to the properties and dynamics of global agricultural systems is becoming increasingly important.
Friedl, Mark A   +5 more
core   +3 more sources

Spring Temperature and Snow Cover Climatology Drive the Advanced Springtime Phenology (1991–2014) in the European Alps

open access: yesJournal of Geophysical Research: Biogeosciences, 2021
Shifts in phenology are important traces of climate change affecting mountainous ecosystems. We present an analysis of changes in spring phenology using a suite of Earth observation based parameters, that is, start of season (SOS), snow cover extent and ...
Jing Xie   +7 more
semanticscholar   +1 more source

Bioclimatic, demographic and anthropogenic correlates of grizzly bear activity patterns in the Greater Yellowstone Ecosystem

open access: yesOikos, EarlyView.
Plasticity of diel activity rhythms may be a key element for adaptations of wildlife populations to changing environmental conditions. In the last decades, grizzly bears Ursus arctos in the Greater Yellowstone Ecosystem (GYE) have experienced notable environmental fluctuations, including changes in availability of food sources and severe droughts ...
Aurora Donatelli   +4 more
wiley   +1 more source

Winter climate change in alpine tundra: plant responses to changes in snow depth and snowmelt timing [PDF]

open access: yes, 2018
Snow is an important environmental factor in alpine ecosystems, which influences plant phenology, growth and species composition in various ways. With current climate warming, the snow-to-rain ratio is decreasing, and the timing of snowmelt advancing. In
Bebi, Peter   +2 more
core  

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