Results 51 to 60 of about 24,733 (259)

Post-drought decline of the Amazon carbon sink [PDF]

open access: yes, 2018
Amazon forests have experienced frequent and severe droughts in the past two decades. However, little is known about the large-scale legacy of droughts on carbon stocks and dynamics of forests.
Choi, Sungho   +9 more
core   +2 more sources

Trends in marine species distribution models: a review of methodological advances and future challenges

open access: yesEcography, EarlyView.
Correlative species distribution models (SDMs) are quantitative tools in biogeography and macroecology. Building upon the ecological niche concept, they correlate environmental covariates to species presence to model habitat suitability and predict species distributions.
Moritz Klaassen   +3 more
wiley   +1 more source

WOODLAND POND SALAMANDER ABUNDANCE IN RELATION TO FOREST MANAGEMENT AND ENVIRONMENTAL CONDITIONS IN NORTHERN WISCONSIN [PDF]

open access: yes, 2015
Woodland ponds are important landscape features that help sustain populations of amphibians that require this aquatic habitat for successful reproduction.
Beck, Albert J.   +5 more
core   +2 more sources

Some aspects of ice phenology on ponds in central Alaska, USA [PDF]

open access: yesAnnals of Glaciology, 2007
AbstractIce phenology (freeze-up, break-up and duration) was monitored for five seasons between autumn 2001 and spring 2006 at 11 small, shallow ponds in the boreal forest of central Alaska, USA. The sequence in which freeze-up (FU; day of 100% ice cover) and break-up (BU; day of zero ice cover) occurred at the 11 ponds showed moderately high to very ...
Martin O. Jeffries, Kim Morris
openaire   +1 more source

Temperature variability homogenized thermal responses in an ectotherm community along a European longitudinal gradient

open access: yesEcography, EarlyView.
Climate change, through rising temperatures, greater variability, and more frequent extremes, is reshaping insect phenology and thermal niches, with profound effects for pest outbreaks. Predicting these impacts requires a clear understanding of species and communities' responses across geographic gradients.
Ruining Li   +5 more
wiley   +1 more source

Variations of Lake Ice Phenology Derived from MODIS LST Products and the Influencing Factors in Northeast China

open access: yesRemote Sensing
Lake ice phenology serves as a sensitive indicator of climate change in the lake-rich Northeast China. In this study, the freeze-up date (FUD), break-up date (BUD), and ice cover duration (ICD) of 31 lakes were extracted from a time series of the land ...
Xiaoguang Shi   +5 more
doaj   +1 more source

Climate Change Has Already Reshaped North American Forest Pest Dynamics: Insights From Multidecadal Process‐Based Modelling

open access: yesGlobal Change Biology Communications, EarlyView.
Climate change has rapidly expanded and shifted suitable climate conditions for eight major forest pests across North America, especially toward northern and higher elevation areas. Host exposure and overlap among pests are increasing, raising ecological and economic risks, and signaling accelerating future impacts under continued warming.
Yan Boulanger   +5 more
wiley   +1 more source

Spatial-Temporal Distribution of the Freeze–Thaw Cycle of the Largest Lake (Qinghai Lake) in China Based on Machine Learning and MODIS from 2000 to 2020

open access: yesRemote Sensing, 2021
The lake ice phenology variations are vital for the land–surface–water cycle. Qinghai Lake is experiencing amplified warming under climate change. Based on the MODIS imagery, the spatio-temporal dynamics of the ice phenology of Qinghai Lake were analyzed
Weixiao Han   +4 more
doaj   +1 more source

Investigation of spatial and temporal variability of river ice phenology and thickness across Songhua River Basin, northeast China [PDF]

open access: yesThe Cryosphere, 2020
The regional role and trends of freshwater ice are critical factors for aquatic ecosystems, climate variability, and human activities. The ice regime has been scarcely investigated in the Songhua River Basin of northeast China. Using daily ice records of
Q. Yang   +6 more
doaj   +1 more source

Phenological Gardens Protocol [PDF]

open access: yes, 2003
The purpose of this resource is to observe the flowering and leaf stages of selected garden plants throughout the year. After a phenological garden is planted, students observe the growth of leaves and blooming of flowers on the plants. These plants were
The GLOBE Program, University Corporation for Atmospheric Research (UCAR)
core  

Home - About - Disclaimer - Privacy