Species richness, relative abundances and habitat use in local assemblages ofSorex shrews in Eurasian boreal forests

Sheftel, B. I.; Hanska, Ilkka

doi:10.1007/bf03192480

Cited by 17 publications

(10 citation statements)

References 26 publications

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“…This species exhibits irregular outbreak dynamics in seminatural pine forests, and its outbreaks can cover thousands of hectares and last for several years (Lyytikäinen-Saarenmaa & Tomppo, 2002). Small mammals, as predators of sawfly cocoons, contribute significantly to the population dynamics of this species (Hanski & Parviainen, 1985;Olofsson, 1987), and previous studies have found a positive relationship between habitat type and the abundance of small mammals (Ecke, Lofgren, & Sorlin, 2002;Sheftel & Hanski, 2002). In the study presented here, we investigated the effect of habitat heterogeneity on cocoon predation by small mammals over a period of two summers in a predator-prey system in which both the predator and prey can exhibit large fluctuations.…”

Section: Introductionmentioning

confidence: 97%

Habitat heterogeneity affects predation of European pine sawfly cocoons

Bellone

Klapwijk

Björkman

2017

Ecology and Evolution

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Habitat heterogeneity is thought to affect top‐down control of herbivorous insects and contribute to population stability by providing a more attractive microhabitat for natural enemies, potentially leading to reduced population fluctuations. Identifying the parameters that contribute to habitat heterogeneity promoting top‐down control of herbivorous insects by natural enemies could facilitate appropriate management decisions, resulting in a decreased risk of pest insect outbreaks because of a higher level of predation. In our study, we measured the top‐down pressure exerted by small mammals on the cocoons of a notorious pest insect in pine forests, the European pine sawfly (Neodiprion sertifer), which is known to be regulated by small mammal predation. The forest stands used differed in heterogeneity measured in terms of differences in tree diversity and density, understory vegetation height, presence/absence, and density of dead wood. We found higher predation in more dense spots within forest stands. Further, the effect of dead wood on sawfly cocoon predation depended on the pine proportion in forest stands. The addition of dead wood in a manipulation experiment had a slight positive effect on cocoon predation, while dead wood removal caused a clear decrease in predation rate, and the decrease was more pronounced when the proportion of pine increased. Our results show that habitat heterogeneity affects predation by generalist predators on herbivorous insects. This knowledge could be applied to reduce the risk of insect outbreaks by applying management methods that increase heterogeneity in perennial systems such as forests and orchards, thus decreasing the levels of insect damage.

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Section: Introductionmentioning

confidence: 97%

Habitat heterogeneity affects predation of European pine sawfly cocoons

Bellone

Klapwijk

Björkman

2017

Ecology and Evolution

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“…Numerous works dealed with communities of natural climax spruce forests in various stages of succession or wider synecological links (Zejda 1981;Gaisler 1983;Burger et al 1987), eventually due to influence on trees (Gill 1992;Purchart and Suchomel 2007). A large part of the studies also focused on the role of Soricidae in mountain spruce forests and in Scandinavia (Kollars 1995;Shelftel and Hanski 2002).…”

Section: Introductionmentioning

confidence: 99%

Small Mammal Community of Forest Stands in Drahanská vrchovina Upland (Czech Republic)

Čepelka

Purchart

Suchomel

2015

Beskydy

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In the years 2006–2011 was studied community of small terrestrial mammals in the Drahanská vrchovina Upland. There were compared four stands of different age and tree species composition (30 years old spruce stand; 105 years old spruce forest; 125 years old mixed stand, and 40 years old beech stand). Totally 276 individuals of small terrestrial mammals were trapped and analyzed. The vast majority of cases were Apodemus flavicollis (163), Clethrionomys glareolus (81 specimen), and Apodemus sylvaticus (28). Besides previous species has been confirmed Sorex araneus (2) and Microtus arvalis (1). At all sites the most numerous species was A. flavicollis. Changes in species abundance were synchronized not only among themselves, but also in comparison to southern Moravia. The smallest amplitude and thus the smallest variation showed a population of mammals in old mixed forest. The highest population densities were found in younger spruce stand. The highest biodiversity according to all aspects except the number of species has been found among spruce stands.

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“…Àðèäíûå òåððèòîðèè õàðàêòåðèçóþòñÿ ñêóäíîé ðàñòèòåëüíîñòüþ, ñëàáûì ðàçâèòèåì ïîäñòèëêè è, êàê ñëåäñòâèå, ìåíüøèì êîëè÷åñòâîì áåñïîçâîíî÷íûõ, ÿâëÿþùèõñÿ îñíîâíûì êîðìîì äëÿ ðàç-ëè÷íûõ íàñåêîìîÿäíûõ. Ïî-âèäèìîìó, ìåëêèå âèäû çåìëåðîåê â áîëüøåé ñòåïåíè ñïîñîáíû âûaeèâàòü è ðàçìíîaeàòüñÿ â ìàëîïðîäóêòèâíîé ñðåäå [Sheftel, Hanski, 2002]. Â òî aeå âðåìÿ êðóïíûå âèäû ìîãóò âñëåäñòâèå êîíêóðåíöèè óìåíüøèòü îáèëèå ìåëêèõ âèäîâ â áîëåå ïðîäóêòèâíîé ñðåäå îáèòàíèÿ.…”

Section: çàêëþ×åíèåunclassified

Aspects of Shrew Communities Organization in Open Landscapes of Siberia and Northern Kazakhstan

2015

SEJ

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Èçó÷åíû øåñòü ñîîáùåñòâ 10 âèäîâ çåìëåðîåê îòêðûòûõ ëàíäøàôòîâ Ñåâåðíîé Àçèè. Ñîîáùåñòâà õàðàêòåðèçóþòñÿ ñõîäíîé ñòðóêòóðîé è îáåäíåííûì âèäîâûì ñîñòàâîì, íèçêèìè ïîêàçàòåëÿìè ðàçíîîáðàçèÿ è ÷èñëåííîñòè. Ïîêàçàíî, ÷òî ñòðóêòóðà ñîîáùåñòâ çåìëåðîåê îòäåëüíûõ ó÷àñòêîâ çàâèñèò îò ïëîùàäåé, çàíÿòûõ ñòåïíûìè, îáëåñåííûìè è îêîëîâîäíûìè ìèêðîëàíäøàôòàìè. Íà ñîñòàâ è ñòðóêòóðó äîìèíèðîâàíèÿ ñîîáùåñòâ âëèÿþò ëàíäøàôòíî-ãåîãðàôè÷åñêèå îñîáåííîñòè ìåñòíîñòè. Ïðè èññëåäîâàíèè ïîïóëÿöèîííîé äèíàìèêè â Ñåâåðíîì Êàçàõñòàíå è íà þãå Çàïàäíîé Ñèáèðè ó äâóõ âèäîâ çåìëåðîåê âûÿâëåíà ñèíõðîííîñòü äèíàìèêè ÷èñëåííîñòè.

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Species richness, relative abundances and habitat use in local assemblages ofSorex shrews in Eurasian boreal forests

Cited by 17 publications

References 26 publications

Habitat heterogeneity affects predation of European pine sawfly cocoons

Habitat heterogeneity affects predation of European pine sawfly cocoons

Small Mammal Community of Forest Stands in Drahanská vrchovina Upland (Czech Republic)

Aspects of Shrew Communities Organization in Open Landscapes of Siberia and Northern Kazakhstan

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