Results 111 to 120 of about 101,096 (303)

Aspects of the ecology, behaviour and ecosystem effects of the marine polychaete Nereis diversicolor (O.F. Müller, 1776) in the estuaries of south-east England.

open access: yes, 2010
PhDThe marine infaunal polychaete Nereis diversicolor has been shown to restrict the development of pioneer saltmarsh vegetation in south-east England through bioturbation and herbivory while surface deposit feeding. This can have severe implications for
Aberson, Marja Juliette Ruth
core  

Summer feeding behaviour of reindeer [PDF]

open access: yes, 2006
Reindeer (Rangifer tarandus L.) plays an important role ecologically, economically, as well as culturally in northern Fennoscandia, where reindeer husbandry traditionally has considered winter to be the bottleneck for reindeer.
Mårell, Anders
core  

Distribution, abundance, and feeding ecology of baleen whales in Icelandic waters: have recent environmental changes had an effect?

open access: yes, 2015
Date of Acceptance: 13/01/2015The location of Iceland at the junction of submarine ridges in the North-East Atlantic where warm and cold water masses meet south of the Arctic Circle contributes to high productivity of the waters around the island. During
Bjarni Mikkelsen   +34 more
core   +1 more source

Sustainable Productivity Growth in Agriculture: The Role of Shifts in R&D Investments and Technology

open access: yesApplied Economic Perspectives and Policy, EarlyView.
ABSTRACT The objective of the paper is to evaluate the long‐term prospects of sustainable productivity growth linked to plausible assumptions on public agricultural R&D investments as the key productivity driver. Second, it investigates the role of changing R&D focus from yield maximization to input saving technologies (fertilizers and pesticides). The
Zuzana Smeets Křístková   +4 more
wiley   +1 more source

Feeding ecology of franciscana dolphin, Pontoporia blainvillei (Cetacea:Pontoporiidae), and oceanographic processes on the Southern Brazilian coast [PDF]

open access: yes, 2005
The feeding regime of the franciscana dolphin was investigated from stomach contents of incidentally caught animals in gillnets along the southern Brazilian coast, from 1994 to 2000. The analyses were based mainly on Linear and Generalised Linear Models (
Bassoi, Manuela
core  

Ecology and evolution of soil nematode chemotaxis

open access: yes, 2012
Plants influence the behavior of and modify community composition of soil-dwelling organisms through the exudation of organic molecules. Given the chemical complexity of the soil matrix, soil-dwelling organisms have evolved the ability to detect and ...
Rasmann, S.   +4 more
core   +1 more source

Ban Glyphosate—Does It Affect the Swedish Farmers' Willingness to Grow Cover Crops?

open access: yesApplied Economic Perspectives and Policy, EarlyView.
ABSTRACT The cultivation of cover crops is one of the new Eco‐scheme practices introduced in Sweden. This study examines how the design of policy attributes of these schemes influences farmers' willingness to grow cover crops on arable land, with particular focus on the potential impact of a glyphosate ban.
Vivian Wei Huang   +2 more
wiley   +1 more source

The diet and feeding ecology of harbour seals around Britain

open access: yes, 2015
Since 2000, there has been a marked decline in the number of harbour seals in some regions around Britain; one possible contributing cause is competition for prey with sympatric grey seals.
Wilson, Lindsay J.
core  

Coping With Production Risk: Effects of Sown Plant Diversity on the Attractiveness of Crop Insurance in Grasslands

open access: yesApplied Economic Perspectives and Policy, EarlyView.
ABSTRACT Increased frequency of extreme weather events, particularly droughts, threatens grassland farming by destabilizing yields and farms' economic viability. We examine, theoretically and through numerical simulations, how sown plant diversity (natural insurance) influences the attractiveness of indemnity and drought index insurance (formal ...
Nicolas Alou   +3 more
wiley   +1 more source

The Breeding Ecology of Homed Puffins Fratercula comiculata in Alaska. [PDF]

open access: yes, 2001
The Horned Puffin {Fratercula corniculata) is one of three North Pacific puffin species. Horned Puffins almost always nest amongst boulders and in rock crevices.
Harding, Ann Marie Aglionby
core  

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