scholarly journals Island species-area relationships and species accumulation curves are not equivalent: an analysis of habitat island datasets

2016 ◽  
Vol 25 (5) ◽  
pp. 607-618 ◽  
Author(s):  
Thomas J. Matthews ◽  
Kostas A. Triantis ◽  
François Rigal ◽  
Michael K. Borregaard ◽  
François Guilhaumon ◽  
...  
Keyword(s):  
Species Accumulation Curves ◽  
Species Accumulation ◽  
Island Species ◽  
Habitat Island ◽  
Species Area ◽  
Accumulation Curves

scholarly journals The endophytic community of Dactylis glomerata

2007 ◽  
Vol 13 ◽  
pp. 69-73
Author(s):  
Sánchez Márquez ◽  
G.F. Bills ◽  
I. Zabalgogeazcoa
Keyword(s):  
Fungal Endophytes ◽  
Dactylis Glomerata ◽  
Molecular Methods ◽  
Sampling Effort ◽  
Species Accumulation Curves ◽  
Species Accumulation ◽  
Unknown Species ◽  
Ecological Roles ◽  
Accumulation Curves ◽  
Endophytic Community

Morphological and molecular methods were used to identify the endophytic mycobiota of the grass Dactylis glomerata. Fungal endophytes belonging to 109 different species were isolated from asymptomatic plants sampled in different ecosystems in Spain. Species accumulation curves showed that most species commonly infecting this grass have been identified, but the number of singleton species occasionally infecting the plants is likely to increase with more sampling effort. A large endophytic assemblage consisting of fungi with diverse ecological roles, and potentially unknown species was found in a small number of plants. Keywords: endophytes, Dactylis glomerata, diversity, abundance

scholarly journals Can Observation Skills of Citizen Scientists Be Estimated Using Species Accumulation Curves?

PLoS ONE ◽  
2015 ◽  
Vol 10 (10) ◽  
pp. e0139600 ◽  
Author(s):  
Steve Kelling ◽  
Alison Johnston ◽  
Wesley M. Hochachka ◽  
Marshall Iliff ◽  
Daniel Fink ◽  
...  
Keyword(s):  
Species Accumulation Curves ◽  
Species Accumulation ◽  
Accumulation Curves

scholarly journals Species Accumulation Curves and Extreme Value Theory

2021 ◽  
pp. 211-226
Author(s):  
Luís Borda-de-Água ◽  
Saeid Alirezazadeh ◽  
Manuela Neves ◽  
Stephen P. Hubbell ◽  
Paulo A. V. Borges ◽  
...  
Keyword(s):  
Extreme Value Theory ◽  
Value Theory ◽  
Extreme Value ◽  
Species Accumulation Curves ◽  
Species Accumulation ◽  
Accumulation Curves

scholarly journals Comparison of forest regeneration in two sites with different primate abundances in Northwestern Ecuador

2016 ◽  
Vol 64 (2) ◽  
pp. 493 ◽  
Author(s):  
Bayron R. Calle-Rendón ◽  
Mika Peck ◽  
Sara E. Bennett ◽  
Citlalli Morelos-Juarez ◽  
Felipe Alfonso
Keyword(s):  
Species Richness ◽  
Tree Species ◽  
Forest Regeneration ◽  
Tree Diversity ◽  
Primate Species ◽  
Species Accumulation Curves ◽  
Dispersal Syndrome ◽  
Species Accumulation ◽  
Accumulation Curves ◽  
Understory Tree

There is increasing evidence that large-bodied primates play important roles as seed dispersers and in the maintenance of tree diversity in forest ecosystems. In this study we compared forest regeneration at two sites with differing primate abundances in the Ecuadorian Chocoan rainforest. We predicted: (1) significant differences in primate abundance between the two sites; (2) higher understory tree species richness and density at the site with greater primate abundance; (3) the site with lower primate abundance characterized by tree species dispersed by non-primate biotic agents and/or abiotic factors. We compared two sites, Tesoro Escondido (TE) a campesino cooperative, and the El Pambilar (EP) wildlife refuge that both maintain populations of mantled howler monkey (Alouatta palliata), the brown-headed spider monkey (Ateles fusciceps fusciceps) and the capuchin monkey (Cebus capucinus). We characterized canopy structure by point-quadrant sampling, determined primate abundance and sampled seedlings/saplings in 1 m2 plots, classifying tree species based on three dispersal syndromes: adapted for primate dispersal, dispersed by other biological agents, and abiotic dispersal. We compared sites in terms of primate abundance (groups and individuals observed per day) and regeneration characteristics (overall density, species richness, and dispersal syndrome). We carried out within site comparisons and constructed understory tree species accumulation curves. Overall the forests were structurally similar - with significantly higher densities of A. f. fusciceps at TE. Encounter rates for the other two primate species were similar at both sites. Understory tree density and species richness was significantly higher in TE with no stabilization of tree species accumulation curves. The species accumulation curve for understory trees at EP stabilized. Higher densities and species richness of primate dispersed tree species were observed at TE, with non-primate biotically dispersed tree species the dominant dispersal syndrome at both sites. Our observations are consistent with those from other studies investigating the role of large-bodied frugivorous primates in forest regeneration, and point to a general pattern: future lowland tropical forest tree diversity depends on maintaining robust populations of large primate species in these systems. It is highly probable that the maintenance of high levels of tree diversity in Chocoan rainforests is dependent on the conservation of its largest resident primate, the critically endangered brown-headed spider monkey (A. f. fusciceps).

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