Large and least isolated fragments preserve habitat specialist spiders best in dry sandy grasslands in Hungary

Roland Horváth, T. Magura, Csaba Szinetár, János Eichardt, B. Tóthmérész

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

The role of fragment size, isolation and habitat diversity in the conservation of spider assemblages living in fragmented landscape were studied in dry sandy grasslands (East Hungary, Nyírség). Spiders were collected using pitfall traps at eight dry grassland fragments from 2001 to 2009 from March to October fortnightly. We tested the rules of island biogeography, which suggest that the species richness increases with the size and decreases with the isolation of fragments. The habitat diversity is an important factor for species richness, since large areas usually have more habitats; therefore, the number of species may be higher in these areas. During the 9-year study period, altogether 10,544 individuals belonging to 106 species were collected. Contradicting the classical theory, we found a significant negative relationship between the total number of spider species and the grassland size, while the ratio of sandy grassland specialist spider species increased with fragment size. The relationship between the ratio of generalist species and the fragment size was not significant. The overall species richness and the isolation of studied grasslands did not show a significant relationship. The ratio of sandy grassland specialist species decreased, while the ratio of generalist species increased with the increasing of isolation. The habitat diversity did not show any effect on spider species richness. We concluded that to conserve the habitat specialist species it is recommended to preserve the large and least isolated grassland fragments, furthermore to increase the size of small fragments with the restoration of the adjacent croplands.

Original languageEnglish
Pages (from-to)2139-2150
Number of pages12
JournalBiodiversity and Conservation
Volume22
Issue number10
DOIs
Publication statusPublished - Sep 2013

Fingerprint

Hungary
spider
preserves
Araneae
grasslands
grassland
habitat
habitats
species richness
species diversity
generalist
island biogeography
pitfall traps
preserve
pitfall trap
biogeography

Keywords

  • Fragmentation
  • Generalist species
  • Habitat heterogeneity
  • Island biogeography
  • Sandy grassland specialist species
  • Species richness

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics
  • Ecology
  • Nature and Landscape Conservation

Cite this

Large and least isolated fragments preserve habitat specialist spiders best in dry sandy grasslands in Hungary. / Horváth, Roland; Magura, T.; Szinetár, Csaba; Eichardt, János; Tóthmérész, B.

In: Biodiversity and Conservation, Vol. 22, No. 10, 09.2013, p. 2139-2150.

Research output: Contribution to journalArticle

@article{862d08c002e5488b868bd3b0107f4193,
title = "Large and least isolated fragments preserve habitat specialist spiders best in dry sandy grasslands in Hungary",
abstract = "The role of fragment size, isolation and habitat diversity in the conservation of spider assemblages living in fragmented landscape were studied in dry sandy grasslands (East Hungary, Ny{\'i}rs{\'e}g). Spiders were collected using pitfall traps at eight dry grassland fragments from 2001 to 2009 from March to October fortnightly. We tested the rules of island biogeography, which suggest that the species richness increases with the size and decreases with the isolation of fragments. The habitat diversity is an important factor for species richness, since large areas usually have more habitats; therefore, the number of species may be higher in these areas. During the 9-year study period, altogether 10,544 individuals belonging to 106 species were collected. Contradicting the classical theory, we found a significant negative relationship between the total number of spider species and the grassland size, while the ratio of sandy grassland specialist spider species increased with fragment size. The relationship between the ratio of generalist species and the fragment size was not significant. The overall species richness and the isolation of studied grasslands did not show a significant relationship. The ratio of sandy grassland specialist species decreased, while the ratio of generalist species increased with the increasing of isolation. The habitat diversity did not show any effect on spider species richness. We concluded that to conserve the habitat specialist species it is recommended to preserve the large and least isolated grassland fragments, furthermore to increase the size of small fragments with the restoration of the adjacent croplands.",
keywords = "Fragmentation, Generalist species, Habitat heterogeneity, Island biogeography, Sandy grassland specialist species, Species richness",
author = "Roland Horv{\'a}th and T. Magura and Csaba Szinet{\'a}r and J{\'a}nos Eichardt and B. T{\'o}thm{\'e}r{\'e}sz",
year = "2013",
month = "9",
doi = "10.1007/s10531-013-0439-y",
language = "English",
volume = "22",
pages = "2139--2150",
journal = "Biodiversity and Conservation",
issn = "0960-3115",
publisher = "Springer Netherlands",
number = "10",

}

TY - JOUR

T1 - Large and least isolated fragments preserve habitat specialist spiders best in dry sandy grasslands in Hungary

AU - Horváth, Roland

AU - Magura, T.

AU - Szinetár, Csaba

AU - Eichardt, János

AU - Tóthmérész, B.

PY - 2013/9

Y1 - 2013/9

N2 - The role of fragment size, isolation and habitat diversity in the conservation of spider assemblages living in fragmented landscape were studied in dry sandy grasslands (East Hungary, Nyírség). Spiders were collected using pitfall traps at eight dry grassland fragments from 2001 to 2009 from March to October fortnightly. We tested the rules of island biogeography, which suggest that the species richness increases with the size and decreases with the isolation of fragments. The habitat diversity is an important factor for species richness, since large areas usually have more habitats; therefore, the number of species may be higher in these areas. During the 9-year study period, altogether 10,544 individuals belonging to 106 species were collected. Contradicting the classical theory, we found a significant negative relationship between the total number of spider species and the grassland size, while the ratio of sandy grassland specialist spider species increased with fragment size. The relationship between the ratio of generalist species and the fragment size was not significant. The overall species richness and the isolation of studied grasslands did not show a significant relationship. The ratio of sandy grassland specialist species decreased, while the ratio of generalist species increased with the increasing of isolation. The habitat diversity did not show any effect on spider species richness. We concluded that to conserve the habitat specialist species it is recommended to preserve the large and least isolated grassland fragments, furthermore to increase the size of small fragments with the restoration of the adjacent croplands.

AB - The role of fragment size, isolation and habitat diversity in the conservation of spider assemblages living in fragmented landscape were studied in dry sandy grasslands (East Hungary, Nyírség). Spiders were collected using pitfall traps at eight dry grassland fragments from 2001 to 2009 from March to October fortnightly. We tested the rules of island biogeography, which suggest that the species richness increases with the size and decreases with the isolation of fragments. The habitat diversity is an important factor for species richness, since large areas usually have more habitats; therefore, the number of species may be higher in these areas. During the 9-year study period, altogether 10,544 individuals belonging to 106 species were collected. Contradicting the classical theory, we found a significant negative relationship between the total number of spider species and the grassland size, while the ratio of sandy grassland specialist spider species increased with fragment size. The relationship between the ratio of generalist species and the fragment size was not significant. The overall species richness and the isolation of studied grasslands did not show a significant relationship. The ratio of sandy grassland specialist species decreased, while the ratio of generalist species increased with the increasing of isolation. The habitat diversity did not show any effect on spider species richness. We concluded that to conserve the habitat specialist species it is recommended to preserve the large and least isolated grassland fragments, furthermore to increase the size of small fragments with the restoration of the adjacent croplands.

KW - Fragmentation

KW - Generalist species

KW - Habitat heterogeneity

KW - Island biogeography

KW - Sandy grassland specialist species

KW - Species richness

UR - http://www.scopus.com/inward/record.url?scp=84883296519&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84883296519&partnerID=8YFLogxK

U2 - 10.1007/s10531-013-0439-y

DO - 10.1007/s10531-013-0439-y

M3 - Article

AN - SCOPUS:84883296519

VL - 22

SP - 2139

EP - 2150

JO - Biodiversity and Conservation

JF - Biodiversity and Conservation

SN - 0960-3115

IS - 10

ER -