scholarly journals Countryside Species–Area Relationship as a Valid Alternative to the Matrix‐Calibrated Species–Area Model

2014 ◽  
Vol 28 (3) ◽  
pp. 874-876 ◽  
Author(s):  
HENRIQUE MIGUEL PEREIRA ◽  
GUY ZIV ◽  
MURILO MIRANDA
Forests ◽  
2019 ◽  
Vol 10 (5) ◽  
pp. 422
Author(s):  
Beibei Chen ◽  
Jun Jiang ◽  
Xiuhai Zhao

The Species-area relationship is one of the core issues in community ecology and an important basis for scale transformation of biodiversity. However, the effect of scale on this relationship, together with the selection of an optimal species-area model for different sampling methods, is still controversial. This study is based on the data from two sampling areas of 40 km2 in size, one in a Korean pine (Pinus koraiensis Sieb. et Zucc) broad-leaved mixed forest in Mt. Changbai and the other in Jiaohe, Jilin Province. The logarithmic, power, and logistic model were established on a scale of 10 km2, 20 km2, and 30 km2, respectively, using a nested sampling plot and random sampling plot. The goodness of the species-area model was tested by the Akaike information criterion (AIC). The results show that the sampling method affected the relationship between species and area, and the data were fitted better under random sampling compared with nested sampling. The construction of the relationship between species and area was closely related to the upper limit of the sampling area size. On a small scale (10 km2), the data were fitted best with the logarithmic and logistic model, whereas the logistic model was the best fit on a medium (20 km2) and large scale (30 km2). We evaluated the scale dependence of species-area relationship in two forests with nested and random sampling methods. We further showed that the logistic model based on the random sampling plot can explain most soundly the species-area relationship in Jiaohe and Mt. Changbai. More studies are needed in other regions to develop models to optimize sampling designs for different forest types under different density constraints at different spatial scales, and for a more accurate estimation of forest dynamics under long-term observations.


2010 ◽  
Vol 3 (3) ◽  
pp. 60-63 ◽  
Author(s):  
Hélida Ferreira da Cunha ◽  
Pedro Paulo Aquino Moura Morais

O desmatamento no Cerrado para a formação de pastagens e criação de rebanhos bovinos tem prejudicado a diversidade e a conservação das espécies de cupins. A presença de cupinzeiros em pastagens está associada a solos degradados, mas a maioria das espécies atua como consumidores primários e decompositores, auxiliando na ciclagem de nutrientes, aeração e formação do solo. Se os cupinzeiros correspondem a “ilhas” inseridas na matriz da pastagem, então, diferentes tamanhos de cupinzeiros podem agrupar diferentes números de espécies. O objetivo desse trabalho foi estimar a relação espécie-área em cupinzeiros epígeos de uma pastagem em uma área periférica do município de Goiânia-GO. O estudo foi executado em um hectare da pastagem, todos os cupinzeiros foram contados e mensurados (circunferência da base) para calcular a área da base (m²). Outras espécies habitantes do ninho foram amostradas em 10% dos cupinzeiros. A maioria dos cupinzeiros era de Cornitermes snyderi Emerson, que abrigava outras espécies de cupins inquilinos e de termitófilos. Nos cupinzeiros maiores e mais antigos da pastagem há uma tendência em encontrar um maior número de espécies de cupins e de termitófilos, em uma relação de cerca de cinco espécies para quase 3m² (S= 5,13*A2,8). Embora visualmente as pastagens estejam repletas de cupinzeiros, a maioria das espécies que habitam os cupinzeiros colabora com a decomposição de matéria seca e reciclagem de nutrientes para a pastagem. Por isso, a presença de cupinzeiros na paisagem contribui para a preservação de diferentes espécies do bioma. Specie-Area Relationship of Termite Nests of the Pasture, Goiânia-GO, Brazil Abstract. Deforestation in the Cerrado for pastures and livestock raising cattle has damaged the diversity and conservation of the termite species. The presence of termite nests in pastures is associated with degraded soils, but most species acts as primary consumers and decomposers, assisting in the cycling of nutrients, aeration and soil formation. If termites are “islands” inserted in the matrix of pasture, so, different sized termite nests can group different numbers of species. The aim of this study was to estimate the species-area relationship in termite nests of the pasture in a peripheral area of the municipality of Goiânia-GO. The study was performed on one hectare of pasture, all termite nests were counted and measured (circumference of the base) to calculate the base area (m²). Other species inhabiting the termite nests were sampled in 10% of the nests of the pasture. Most of the nests were of Cornitermes snyderi Emerson, which sheltered other inquiline termite species and termitophiles. In oldest and largest termite mounds of the pasture there is a tendency to find a superior number of species of inquiline termites and termitophiles, at a ratio of about five species for almost 3m² (S= 5.13*A2, 8). Although visually the pastures are full of termite nests, the majority of species inhabiting the nest collaborates with the decomposition of dry matter and recycling nutrients to the pasture. Therefore, the presence of termites in the landscape contributes to the preservation of various species of the biome.


2006 ◽  
Vol 241 (3) ◽  
pp. 590-600 ◽  
Author(s):  
Daniel Lawson ◽  
Henrik Jeldtoft Jensen

Ecography ◽  
2012 ◽  
Vol 35 (3) ◽  
pp. 224-231 ◽  
Author(s):  
Tiffany L. Bogich ◽  
Gary M. Barker ◽  
Karin Mahlfeld ◽  
Frank Climo ◽  
Rhys Green ◽  
...  

2004 ◽  
Vol 163 (4) ◽  
pp. 627-633 ◽  
Author(s):  
Annette Ostling ◽  
John Harte ◽  
Jessica L. Green ◽  
Ann P. Kinzig

PLoS ONE ◽  
2013 ◽  
Vol 8 (5) ◽  
pp. e63192 ◽  
Author(s):  
Jie Yang ◽  
Nathan G. Swenson ◽  
Min Cao ◽  
George B. Chuyong ◽  
Corneille E. N. Ewango ◽  
...  

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