Habitat disturbance and the diversity and abundance of ants (Formicidae) in the Southeastern Fall-Line Sandhills

Graham, John H.; Hughie, Hoyt H.; Jones, Susan C.; Wrinn, Kerri M.; Krzysik, Anthony J.; Duda, Jeffrey J.; Freeman, D. Carl; Emlen, John T.; Zak, John C.; Kovacic, David A.; Chamberlin-Graham, Catherine; Balbach, Harold E.

doi:10.1093/jis/4.1.30

Cited by 38 publications

(28 citation statements)

References 50 publications

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“…In contrast, Formicidae were more abundant in disturbed soil. This result suggests that this agricultural practice degraded the habitat for litter-dwelling species and at the same time, created an open and dry habitat that favored the Formicidae (Graham et al, 2004). A similar finding was found by Luz et al (2013), who reported a higher frequency of Formicidae in managed areas than in native forests in Northeast Brazil.…”

Section: Discussionsupporting

confidence: 79%

Biological properties of disturbed and undisturbed Cerrado sensu stricto from Northeast Brazil

et al. 2017

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The aim of this study was to measure soil microbial biomass and soil surface fauna in undisturbed and disturbed Cerrado sensu stricto (Css) from Sete Cidades National Park, Northeast Brazil. The following sites were sampled under Cerrado sensu stricto (Css) at the park: undisturbed and disturbed Css (slash-and-burn agricultural practices). Total organic and microbial biomass C were higher in undisturbed than in disturbed sites in both seasons. However, microbial biomass C was higher in the wet than in the dry season. Soil respiration did not vary among sites but was higher in the wet than in the dry season. The densities of Araneae, Coleoptera, and Orthoptera were higher in the undisturbed site, whereas the densities of Formicidae were higher in the disturbed site. Non-metric multidimensional scaling analysis separated undisturbed from disturbed sites according to soil biological properties. Disturbance by agricultural practices, such as slash-and-burn, probably resulted in the deterioration of the biological properties of soil under native Cerrado sensu stricto in the Sete Cidades National Park.Keywords: soil microbial biomass, soil fauna, sustainability, soil disturbance. Propriedades biológicas de Cerrado sensu stricto preservado e não preservado do Nordeste do BrasilResumo O objetivo do estudo foi avaliar as propriedades biológicas do solo em área de Cerrado sensu stricto preservadas e não preservadas do Parque Nacional de Sete Cidades, Nordeste do Brasil. Os seguintes sites sob Cerrado sensu stricto (Css) foram avaliados: preservado (UND) e não preservado (DIS). O C orgânico total e da biomassa microbiana foram maiores na área preservada do que na não preservada em ambas estações seca e chuvosa. Entretanto, o C da biomassa microbiana foi maior na estação chuvosa do que na seca. A respiração do solo não variou entre as áreas, mas foi maior na estação chuvosa. As densidades de Araneae, Coleoptera e Ortoptera foram maiores na área preservada, enquanto as densidades de Formicidae foram maiores na área não preservada. A analise de escalonamento não-métrico separou a área preservada da não-preservada de acordo com as propriedades biológicas. Os distúrbios no solo pelas atividades agrícolas, como corte-e-queima, resultaram na deterioração das propriedades biológicas do Cerrado nativo no Parque Nacional de Sete Cidades.Palavras-chave: biomassa microbiana do solo, fauna do solo, sustentabilidade, distúrbio no solo.

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Section: Discussionsupporting

confidence: 79%

Biological properties of disturbed and undisturbed Cerrado sensu stricto from Northeast Brazil

et al. 2017

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“…When we began studying species richness of ants at Fort Benning, we selected nine sites in three disturbance classes (light, moderate, and heavy). Species richness seemed to decrease monotonically with increasing disturbance [136]. But when we expanded the study to 40 sites across a much wider range of habitats and disturbance categories (bare ground with widely scattered trees and grasses to deciduous oak-hickory forest) we found the relationship was actually unimodal [32].…”

Section: Polynomial Regression and Data Smoothingmentioning

confidence: 83%

The Humpbacked Species Richness-Curve: A Contingent Rule for Community Ecology

Graham

Duda

2011

International Journal of Ecology

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Functional relationships involving species richness may be unimodal, monotonically increasing, monotonically decreasing, bimodal, multimodal, U-shaped, or with no discernable pattern. The unimodal relationships are the most interesting because they suggest dynamic, nonequilibrium community processes. For that reason, they are also contentious. In this paper, we provide a wide-ranging review of the literature on unimodal (humpbacked) species richness-relationships. Though not as widespread as previously thought, unimodal patterns of species richness are often associated with disturbance, predation and herbivory, productivity, spatial heterogeneity, environmental gradients, time, and latitude. These unimodal patterns are contingent on organism and environment; we examine unimodal species richness-curves involving plants, invertebrates, vertebrates, plankton, and microbes in marine, lacustrine, and terrestrial habitats. A goal of future research is to understand the contingent patterns and the complex, interacting processes that generate them.

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“…Frequent disturbances and low species richness characterise the landscape type of cultivated/exploited land. Negative effects of soil disturbances are shown both for ants (Graham et al, 2004) and for mollusks (Stiven, 1989). In contrast, verges usually have an intact grass sward, and can provide microhabitats for many ant species (Samways et al, 1997).…”

Section: Discussionmentioning

confidence: 99%

Predicting risk habitats for the transmission of the small liver fluke, Dicrocoelium dendriticum to grazing ruminants

et al. 2011

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Abstract. A multiple regression model was used to analyse if the structure of vegetation and soil patches in grazed units (pastures) can be used as explanatory variables to predict the prevalence of Dicrocoelium dendriticum, a common parasite of cattle and sheep, in grazing cattle stocks on the Baltic island of Öland in southern Sweden. The scale dependency was evaluated by comparing three levels of spatial resolution of patches. Prevalence data were obtained from slaughtered animals. Our models predict that the prevalence of D. dendriticum increases in grazed areas with woody vegetation, whereas moist and wet areas decrease parasite prevalence. The predictive power of the statistical models increased with increasing level of patch resolution. Approximately 42% of the variation in parasite prevalence (angular transformation) was explained by the areal proportion of vegetation types (4 th -root-transformed). Based on the results obtained, we believe that our model strategy provides a rational and systematic tool to identify habitats that carry risk for D. dendriticum infection of ruminants, and that it can be applied to other parasites with similar life cycles such as Fasciola hepatica.

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Habitat disturbance and the diversity and abundance of ants (Formicidae) in the Southeastern Fall-Line Sandhills

Cited by 38 publications

References 50 publications

Biological properties of disturbed and undisturbed Cerrado sensu stricto from Northeast Brazil

Biological properties of disturbed and undisturbed Cerrado sensu stricto from Northeast Brazil

The Humpbacked Species Richness-Curve: A Contingent Rule for Community Ecology

Predicting risk habitats for the transmission of the small liver fluke, Dicrocoelium dendriticum to grazing ruminants

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