Results 121 to 130 of about 262,765 (336)

European Arctic Initiatives Compendium [PDF]

open access: yes, 2014
Julkaistu ...
Dahlbäck, Björn   +3 more
core  

Arctic geese in newly colonised, colder breeding areas have higher spring body mass and breed earlier relative to the onset of spring

open access: yesJournal of Animal Ecology, EarlyView.
Moving to colder areas allows arctic geese to reduce the negative effects of climate change (trophic mismatch), but this comes at a price for parents as they face harsher nesting conditions (snow cover), which only parents capable of large investments can cope with: climate change effects differ between individuals within populations.
Kees H. T. Schreven   +9 more
wiley   +1 more source

Subpixel Target Detection in Hyperspectral Imaging Using a Deep Neural Network With a Variable Stepsize Gradient Descent Method

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
The main difficulty in using artificial neural networks, which are designed for classification, to detect a rare subpixel target in hyperspectral imaging is that there is typically only one actual target pixel available for training the neural networks ...
Edisanter Lo, Damien B. Josset
doaj   +1 more source

Residential Docks and Piers: Inventory of laws, regulations, and policies for the Southeastern United States [PDF]

open access: yes, 2003
While the homes threatened by erosion and the developer illegally filling in marshlands are the projects that make the headlines, for many state regulatory programs, it’s the residential docks and piers that take up the most time.
Patterson, Melissa M.
core  

Effects of salmon lice on numbers and size distributions of Atlantic salmon returning to spawn in Norwegian rivers

open access: yesJournal of Applied Ecology, EarlyView.
This study presents a quantitative relationship between infestations of post‐smolt recruits and size‐structured returns of mature salmon to Norwegian rivers, suggesting that louse infestation from farms may reduce returns of spawners and re‐structure the size distribution of mature river populations of Atlantic salmon.
Peder A. Jansen   +4 more
wiley   +1 more source

Research on the evaluation index system for happy rivers and lakes: a case study of Xinchang County in Zhejiang Province, China

open access: yesFrontiers in Ecology and Evolution
The “Happy Rivers and Lakes” initiative is an important measure to systematically address the complex water issues in China. It further highlights the effectiveness of constructing happy rivers and lakes based on river health assessments.
Xiaoyu Li   +5 more
doaj   +1 more source

Southern California independent sport fishing survey Quarterly Report no. 10 [PDF]

open access: yes, 1977
During the October 1 - December 31, 1977 quarter, 28 launch ramps, hoists, and boat rental locations were sampled a total of 294 times. During the sample days 11,942 anglers and 1,025 divers were interviewed.
Wine, Vickie L.
core   +4 more sources

A survey of selected coastal vegetation communities of Florida [PDF]

open access: yes, 1977
A survey of coastal vegetation around Florida was conducted during 1973 and 1974. Seventeen sites were selected and sampled using the transect method to determine species occurrence, relative densities, and habitat development and structure.
Carlton, Jedfrey M.
core  

CEO's Early‐life Experience of Disasters and Corporate Environmental Performance

open access: yesAbacus, EarlyView.
We investigate the nexus between the early‐life disaster experiences of chief executive officers (CEOs) and their firms’ environmental performance metrics. We hypothesize that first‐hand experience of the adversities of natural disasters in the formative years of a CEO can catalyze a transformation in their environmental cognizance and perspective ...
Shushu Liao   +2 more
wiley   +1 more source

Rise of the south: How Arab‐led maritime trade transformed China, 671–1371 CE

open access: yesAsia‐Pacific Economic History Review, Volume 65, Issue 1, Page 3-38, March 2025.
Abstract China's center of socioeconomic activities was in the North prior to the Tang dynasty but is in the South today. We demonstrate that Arab and Persian Muslim traders triggered that transition when they came to China in the late seventh century, by lifting maritime trade along the South Coast and re‐creating the South.
Zhiwu Chen, Zhan Lin, Kaixiang Peng
wiley   +1 more source

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