Results 1 to 10 of about 11,596,072 (260)

Demographic determinants of energy consumption in the European Union: Econometric analysis results [PDF]

open access: yesStanovništvo, 2017
Over the past several decades there has been a strong intensifying trend of human society impact on ecosystems, consumption of natural resources and global change.
Petrović Predrag   +2 more
doaj   +1 more source

Demographic Situation in the Arkhangelsk Oblast: Analysis and Solutions

open access: yesАрктика и Север, 2023
The issue of differentiation of socio-economic development indicators is relevant for the regions of the Russian Federation. An important condition for the effective and stable development of territories is a favorable demographic situation.
Marina N. Kuznetsova   +1 more
doaj   +1 more source

Estimating the Population of Unowned Free-Ranging Domestic Cats in Denmark Using a Combination of Questionnaires and GPS Tracking

open access: yesAnimals, 2022
The present study aimed (1) to estimate the size of the population of unowned free-ranging domestic cats in Denmark using a questionnaire survey combined with a GPS-tracking survey, and (2) to estimate the distribution of the population across different ...
Helene Brøgger Nielsen   +4 more
doaj   +1 more source

Impact of climate change on biodiversity loss of entomofauna in agricultural landscapes of Ukraine [PDF]

open access: yesJournal of Central European Agriculture, 2021
Analysis of long-term data on the state of populations of entomofauna in agricultural landscapes is of practical importance for determining the feasibility of chemical protection of agroecosystems.
Volodymyr Chaika   +9 more
doaj   +1 more source

Estimating Population Size and Some Demographic Parameters of Citrus Mealybug, Planococcus citri (Risso) (Hemiptera: Pseudococcidae) on Cucurbita moschata Duch. in Laboratory Conditions

open access: yesYüzüncü Yıl Üniversitesi Tarim Bilimleri Dergisi, 2021
Planococcus citri is an important pest that is common in many parts of the world and feeds on more than 200 plant species. It attacks the leaves, shoots and fruits of the pumpkin (Cucurbita moschata) plant, which is among its hosts, causing significant ...
Mehmet Salih ÖZGÖKÇE   +3 more
doaj   +1 more source

More than just noise: Chance, mating success, and sexual selection

open access: yesEcology and Evolution, 2021
Chance plays a critical but underappreciated role in determining mating success. In many cases, we tend to think of chance as background noise that can be ignored in studies of mating dynamics.
Hope Klug, Libby Stone
doaj   +1 more source

Identification and Counting of European Souslik Burrows from UAV Images by Pixel-Based Image Analysis and Random Forest Classification: A Simple, Semi-Automated, yet Accurate Method for Estimating Population Size

open access: yesRemote Sensing, 2022
Burrowing mammals such as European sousliks are widespread and contribute significantly to soil ecosystem services. However, they have declined across their range and the non-invasive estimation of their actual population size has remained a challenge ...
Csongor I. Gedeon   +6 more
doaj   +1 more source

Calculation of the effective population size and estimating of total population size using mitochondrial DNA sequencing in Hamedan, Qazvin and Zanjan provinces [PDF]

open access: yesمجله بیوتکنولوژی کشاورزی, 2015
Although wolves have the ability to live in different habitat types, in recent years their population has been drastically reduced in most parts of the country and in some areas has become extinct.
Marziyeh Asadi Aqbelaghi   +4 more
doaj   +1 more source

Endangered birds of old growth forests in the Pirin National Park, SW Bulgaria: habitat preferrences, distribution and population sizes in 2001-2019 [PDF]

open access: yesTichodroma, 2021
Actual status, distribution, numbers and threats for four forest bird species – Tengmalm’s Owl (Aegolius funereus), Pygmy Owl (Glaucidium passerinum), Three-toed Woodpecker (Picoides tridactylus), and Capercaillie (Tetrao urogallus) were studied in the ...
Petar SHURULINKOV   +8 more
doaj   +1 more source

Climate and local abundance in freshwater fishes [PDF]

open access: yesRoyal Society Open Science, 2016
Identifying factors regulating variation in numbers of individuals among populations across a species' distribution is a fundamental goal in ecology. A common prediction, often referred to as the abundant-centre hypothesis, suggests that abundance is ...
Jason H. Knouft, Melissa M. Anthony
doaj   +1 more source

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