Results 71 to 80 of about 11,405 (268)

Nestedness theory suggests wetland fragments with large areas and macrophyte diversity benefit waterbirds

open access: yesEcology and Evolution, 2021
Many artificial wetland constructions are currently underway worldwide to compensate for the degradation of natural wetland systems. Researchers face the responsibility of proposing wetland management and species protection strategies to ensure that ...
Rongxing Wang, Xiaojun Yang
doaj   +1 more source

Big Bird: A global dataset of birds in drone imagery annotated to species level

open access: yesRemote Sensing in Ecology and Conservation, EarlyView.
Drones are a valuable tool for surveying birds, but manually detecting and identifying birds in drone images is costly. We assembled a diverse dataset of 23 865 images of birds captured with 21 different drones across 11 countries. We labelled 4824 of these images, detailing the location, species, posture category, age category, and sex of 49 990 birds
Joshua P. Wilson   +19 more
wiley   +1 more source

Eco-Spatial and Temporal Variation in Waterbirds Composition and their Relationship with Habitat Characteristics of Urban Lakes of Bengaluru City, India [PDF]

open access: yes, 2014
Eco - spatial and temporal variation in the occurrence, abundance, density, diversity and community composition of aquatic birds in relation to the characteristics of lakes was studied from February 2008 to January 2010 in Bengaluru city.
Rajashekara, S., Venkatesha, M.G.
core  

Environmental factors shaping the distribution of common wintering waterbirds in a lake ecosystem with developed shoreline [PDF]

open access: yes, 2013
In this study, we tested whether the spatial distribution of waterbirds is influenced by shoreline urbanization or other habitat characteristics. We conducted monthly censuses along shoreline sections of a continental lake (Lake Balaton, Hungary) to ...
A Buday-Sántha   +45 more
core   +1 more source

Accounting for animal movement during aerial imaging surveys

open access: yesRemote Sensing in Ecology and Conservation, EarlyView.
Animals are not stationary during aerial surveys; if their movements are related to the movement of the aerial platform, then bias can be introduced into subsequent population count estimates. We sought to establish a framework for assessing the impacts of animal movement on count error and platform bias by comparing aggregated counts and relative ...
Rowan L. Converse   +5 more
wiley   +1 more source

Waterbirds in a changing world : effects of climate, habitat and conservation policy on European waterbirds [PDF]

open access: yes, 2017
Climate change has become a major threat for biodiversity in recent decades. Waterbirds, in particular, are very responsive to climate change compared to other avian species and have already shown changes in phenology and distribution.
Pavón Jordán, Diego
core  

Hunting and fishing harvest data collection: a horizon scanning exercise from the French context

open access: yesWildlife Biology, EarlyView.
Legal and societal moves increasingly lead leisure hunting and fishing practitioners to record their harvest. The total number of individuals harvested per population per year is the minimum required information to feed into demographic models and allow science‐based management. Some few schemes record more detailed data, hence allowing better‐informed
Matthieu Guillemain   +17 more
wiley   +1 more source

Jelentés a Gönyü – Szob közti Duna-szakasz (1791–1708 fkm) 2012. augusztus – 2013. április időszakának vízimadár felméréseiről = Report on the Waterbird Censuses of the Danube River between Gönyü and Szob (River kms 1791–1708) during the Period August 2012 and April 2013. [PDF]

open access: yes, 2015
Jelen dolgozat a M AGYAR V ÍZIVAD M ONITORING (MVvM) megfigyelési egységeként nyilvánta rtott Gönyű és Szob közötti Duna szakasza valamennyi vízimadárfajjal kibővített számlálásainak eredményeiről a 35 .
Faragó, Sándor
core   +3 more sources

Waterbird and Wetland Monitoring at The Emiquon Preserve Annual Report 2017 [PDF]

open access: yes, 2018
The Nature Conservancy (TNC) identified key ecological attributes (hereafter, KEAs) of specific biological characteristics or ecological processes that evaluate restoration success and trajectory at The Emiquon Preserve (hereafter Emiquon; The Nature ...
Hagy, Heath M.   +2 more
core  

Buses, cars, bicycles and walkers the influence of the type of human transport on the flight responses of waterbirds [PDF]

open access: yes, 2013
One way to manage disturbance to waterbirds in natural areas where humans require access is to promote the occurrence of stimuli for which birds tolerate closer approaches, and so cause fewer responses.
A Lord   +122 more
core   +4 more sources

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