Changes in the distribution of carabid beetles in The Netherlands since 1880. II. Isolation of habitats and long-term time trends in the occurence of carabid species with different powers of dispersal (Coleoptera, Carabidae)

Turin, H.; Boer, P.J. den

doi:10.1016/0006-3207(88)90101-2

Cited by 92 publications

(51 citation statements)

References 8 publications

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“…(1) Rarity: the fact that predator populations may be smaller than those of their prey makes them more vulnerable to stochastic extinctions Tscharntke 1994, 1998), (2) Variability: population variability is often higher for natural enemies and thereby causes a higher extinction risk Tscharntke 1994, 1998;Tscharntke and Kruess 1998). (3) Dispersal power: predators may fail to colonize isolated habitats because they are bad dispersers (Turin and den Boer 1988). (4) Trophic level: colonizers from higher trophic levels are principally disadvantaged due to their dependence on successful establishment of prey populations (Schoener 1989;Pimm 1991;Lawton 1995;Holt 1996).…”

Section: Discussionmentioning

confidence: 98%

Does fragmentation of Urtica habitats affect phytophagous and predatory insects differentially?

Zabel¹,

Tscharntke²

1998

Oecologia

165

132

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Effects of habitat fragmentation on the insect community of stinging nettle (Urtica dioica L.) were studied, using 32 natural nettle patches of different area and degree of isolation in an agricultural landscape. Habitat fragmentation reduced the species richness of Heteroptera, Auchenorrhyncha, and Coleoptera, and the abundance of populations. Habitat isolation and area reduction did not affect all insect species equally. Monophagous herbivores had a higher probability of absence from small patches than all (monophagous and polyphagous) herbivore species, and the percentage of monophagous herbivores increased with habitat area. Abundance and population variability of species were negatively correlated and could both be used as a predictor of the percentage of occupied habitats. Species richness of herbivores correlated (positively) with habitat area, while species richness of predators correlated (negatively) with habitat isolation. In logistic regressions, the probability of absence of monophagous herbivores from habitat patches could only be explained by habitat area (in 4 out of 10 species) and predator absence probability only by habitat isolation (in 3 out of 14 species). Presumably because of the instability of higher-trophic-level populations and dispersal limitation, predators were more affected by habitat isolation than herbivores, while they did not differ from herbivore populations with respect to abundance or variability. Thus increasing habitat connectivity in the agricultural landscape should primarily promote predator populations.

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Section: Discussionmentioning

confidence: 98%

Does fragmentation of Urtica habitats affect phytophagous and predatory insects differentially?

Zabel¹,

Tscharntke²

1998

Oecologia

165

132

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“…Furthermore, these species in these families are relatively easily identified, and have also been used by other workers, for example Carabidae: Turin and den Boer (1988), Niemela et al (1993), Stork (1993; Scarabaeidae: Klein (1989); Cicindelidae: Pearson and Cassola (1992); Clark and Samways (1995).…”

Section: Indicator Species Conservation Targets and The Importance mentioning

confidence: 99%

Game and cattle trampling, and impacts of human dwellings on arthropods at a game park boundary

Rivers-Moore

Samways

1996

Biodivers Conserv

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Seven grassland sites were sampled at South Africa's Hluhluwe-Umfolozi Game Park boundary with the surrounding land, to assess changes in arthropod diversity in response to land use. Epigaeic arthropods were sampled using pitfall traps and a sweep net. In all, 262 morphospecies were collected, but this is an underestimate of total local species richness. Fifty percent of the species caught were single occurrences. The number of species, families and orders represented at each of the seven sites was not significantly different, but the number of individuals was significantly different. Between-site comparisons, using multivariate statistics, did not reveal any strong site groupings, with all sites being unique. The conclusion is that the reserve boundary does not significantly divide arthropod diversity on a simple inside-versus-outside basis. A major factor influencing the arthropod assemblages was intensity of land use. Indigenous game animals and domestic cattle had the same effect, and it was the intensity of trampling that was important rather than the type of trampling. Human settlements had a major impoverishing effect. The Coleoptera families, Cicindelidae, Staphylindae and Carabidae, were particularly sensitive indicator taxa of land use. Scarabaeidae species were the only group that were severely affected by the fence boundary, simply because their food source, the faeces of large native mammals, was inside, leaving them without resources outside the reserve.

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“…This decline was probably caused by reduction, fragmentation and isolation of their habitat, because the species that disappeared were known to be stenotopic and poorly dispersing (Turin and den Boer, 1988).…”

Section: Introductionmentioning

confidence: 99%

The composition of the carabid fauna on poor sandy road-side verges in relation to comparable open areas

Vermeulen

1993

Biodivers Conserv

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In The Netherlands, the majority of heathlands and dry, unproductive grasslands have been brought into cultivation or afforested since the end of the 19th century. As a result, the original landscape has become highly fragmented. Nowadays, the heath habitat occurs in more or less isolated patches only. Many of these fragments show a small spatial variation in conditions. Ground-dwelling arthropods, with a low dispersal power and a specific preference for poor, sandy, open habitats, could disappear from such small fragments under the influence of temporarally unfavourable conditions. As recolonization from other fragments is often very difficult because of hostile surrounding areas, isolated small fragments that have lost their populations will remain unoccupied. The absence of some carabid species in such small, isolated fragments is thought to be the result of this situation. By introducing heathy corridors between such fragments, animals might be enabled to pass a hostile environment. This study shows that heathy road-side verges can possibly function as such a corridor. On the studied road-side verges, carabid species of poor sandy, open habitats were present, including the more rare species. Some species even found a better habitat at road-side verges than in adjacent poor sandy open areas. For other species the road-side verge seemed to be a more marginal habitat in which they occur only because of the presence of a suitable adjacent area. The distance to such an area, as well as the width of the poor sandy, open stripon the road-side verge seem to be important conditions for the occurrence of the latter species. In order to increase the survival chance in such a corridor, it is suggested that some wider strips or patches be created at the road-side verges, suitable for reproduction. In this way, road-side verges might contribute to a metapopulation structure by which species are better protected against regional extinction.

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Changes in the distribution of carabid beetles in The Netherlands since 1880. II. Isolation of habitats and long-term time trends in the occurence of carabid species with different powers of dispersal (Coleoptera, Carabidae)

Cited by 92 publications

References 8 publications

Does fragmentation of Urtica habitats affect phytophagous and predatory insects differentially?

Does fragmentation of Urtica habitats affect phytophagous and predatory insects differentially?

Game and cattle trampling, and impacts of human dwellings on arthropods at a game park boundary

The composition of the carabid fauna on poor sandy road-side verges in relation to comparable open areas

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