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Estimating terrestrial biodiversity through extrapolation.
TLDR
The importance of using 'reference' sites to assess the true richness and composition of species assemblages, to measure ecologically significant ratios between unrelated taxa, toMeasure taxon/sub-taxon (hierarchical) ratios, and to 'calibrate' standardized sampling methods is discussed.
Systematics and Evolution of Spiders (Araneae)
TLDR
This brief review of taxonomic and phylogenetic knowledge of Araneae suggests where future efforts might profitably be concentrated.
Phylogeny of the orb-web building spiders (Araneae, Orbiculariae: Deinopoidea, Araneoidea)
TLDR
While the spinning complement of single pairs of glands does not change much over the evolution of the group, multiple sets of glands are dramatically reduced in number, implying that derived araneoids are incapable of spinning many silk fibers at the same time.
Atlas of phylogenetic data for entelegyne spiders (Araneae: Araneomorphae: Entelegynae) with comments on their phylogeny
TLDR
A phylogenetic analysis of higher groups of entelegyne spiders, with representatives of all enteleGYne families containing cribellate members and of Palpimanoidea, and a paraphyletic Araneoclada, excluding members of Haplogynae.
A phylogenetic analysis of the orb-weaving spider family Araneidae (Arachnida, Araneae)
TLDR
The first cladistic analysis focused at the tribal and subfamily level of the orb-weaving spider family Araneidae shows behavioral and spinneret features are most consistent on the phylogeny, while sexual size dimorphism evolved once in nephilines, twice in araneids, and reverted to monomorphism five times.
Designing and Testing Sampling Protocols to Estimate Biodiversity in Tropical Ecosystems
Sampling methods to estimate total species richness of a defined area (conservation unit, national park, field station, "community") will play an important role in research on the global loss of
Undersampling bias: the null hypothesis for singleton species in tropical arthropod surveys.
TLDR
The lognormal distribution deserves greater consideration as a richness estimator when undersampling bias is severe, and should be the default null hypothesis for singleton frequencies.
The Monophyletic Origin of the Orb Web
TLDR
Two groups of spiders spin orb webs: the cnbellate Ulobondae, weavers of calamistrated sticky silk, and the ecribellate Araneidae, weaver of true viscid silk, yet both groups spin very similar orb webs.
The functional significance of silk decorations of orb‐web spiders: a critical review of the empirical evidence
TLDR
A phylogenetic analysis of the different decoration patterns suggests that the different types of decorations are as evolutionary labile as the decorations themselves: the analysis shows little homology and numerous convergences and independent gains.
Estimating Spider Species Richness in a Southern Appalachian Cove Hardwood Forest
Variation in species richness at the landscape scale is an important consideration in con - servation planning and natural resource management . To assess the ability of rapid inventory technique s
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