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… ecosystem. We studied three groups of moose management areas with different predation by bears. None, low and high predation, which means a number of 0, 7,5 and 15 bears per 100.000 ha. Jönköping and Kronoberg County ÄFO No. 6 did represent an area with no predation from bears …
implications for human harvest?
Most studies regarding wolf (Canis lupus) predation on moose (Alces alces) have focused on the total annual consumption of moose within a wolf territory but few have tried to describe the spatial impact of wolf predation on a local scale. In this study I have analyzed wolf …
Predation is a strong dective force on invertebrate prey. Asellus aquaticus differs in pigmentation reed and submerged vegetation habitats in lakes. Light pigmented individuals al vegetation dominated by Chara sp. while dark pigmented individuals dominate in the reeds. These …
Predation is one of many factors that form the structure of the macroinvertebrate community in lakes, wetlands and watercourses. Earlier studies lack an examination concerning how fish- and waterfowl predation affect macroinvertebrates during shorter periods in the spring. I …
Prey species make behavioral decisions to reduce the perceived risk of predation and the time spent vulnerable to predation. Behavioral responses to predators are for example selection of specific habitat types and the presence of predators influence individual vigilance …
… calculated by the Kaplan-Meier method was 23.6 % and the mortality caused by predation was low, since only 1 of 8 non-surviving fawns died from predation by red fox (Vulpes vulpes). The spatial behavior of the fallow deer neonates were examined at two different levels i.e. the …
… lite. I vissa områden där varg- och björnstammen överlappar varandra kan deras predation ta en stor del av det årliga älgöverskottet. Både vargen och björnen tar till största delen älgkalv, så det är framför allt denna åldersklass som kommer att reduceras. Endast en liten del av …
en utsikt för svenska förhållanden
… först nyligen har börjat överlappa finns i det närmaste inga data på vargars predation på vildsvin i Sverige. Då detta är av intresse för den framtida debatten kring hur populationerna bör skötas, är syftet i denna studie att undersöka vargars predation och vildsvins beteende i …
betydelse av yngelstorlek för överlevnad hos piggvar och skrubbskädda efter bottenfällning
… and night in density of the shrimp, i.e. when the fish might be subjected to predation. The results showed that predation decreased with size for both turbot and flounder. The brown shrimps prefer small flatfishes, size class <30 mm, without any species preference. The shrimp …
… as feeding resources for many organisms in different food webs. Shifts in predation of these organisms can generate cascading effects and potentially lead to the disappearance of one or more species from a site. Cascading effects can bring impacts to organisms who aren’t even …
… att Länsstyrelsens beslut om skyddsjakt på mellanskarv i Sommen p.g.a. predation av röding och öring inte är befogad.
Prevention of lion predation towards African livestock is of great importance due to the economical losses farmers have because of this. Predation is also one of the main reasons for human-wildlife conflicts and lions often get killed because of it. Therefore, a pilot study …
… energy, biomass production, botanical diversity, decomposition and natural predation of aphids. The research has taken place at the Swedish Agricultural University's ecological experimental farm Ekhaga. Natural pasture, permanent pasture field, first year ley, intercropping of …
… Förutom sjukdomar påverkas flodkräftors populationsstorlek också av predation. Om man bortser från pesten är det svårt att fastställa orsaken till populationsminskningen i sjöarna då många faktorer är inblandade. Syftet med detta examensarbete är att genomföra en …
effekter av bytesstorlek
… length during the season, while mysids (Mysidae) did not.Experiments on predation capacity of different size classes of turbot on different size classesof prey showed that juvenile turbot easily can eat gobies that are up to two thirds of their ownbody length, while the body …
