Geographical Variation of Diversity in Argentine Passerine Birds

Rabinovich, Jorge E.; Rapoport, Eduardo H.

doi:10.2307/3037987

Cited by 66 publications

(62 citation statements)

References 25 publications

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“…However, there are four apparent exceptions. The first involves passerine birds in Argentina (Rabinovich and Rapoport 1975). A major portion of Argentina is mild temperate, yet temperature emerged as the best predictor of bird richness.…”

Section: Vertebrate Richnessmentioning

confidence: 99%

Energy, Water, and Broad-Scale Geographic Patterns of Species Richness

Hawkins¹,

Field²,

Cornell³

et al. 2003

Ecology

2,010

187

2,366

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Abstract. It is often claimed that we do not understand the forces driving the global diversity gradient. However, an extensive literature suggests that contemporary climate constrains terrestrial taxonomic richness over broad geographic extents. Here, we review the empirical literature to examine the nature and form of the relationship between climate and richness. Our goals were to document the support for the climatically based energy hypothesis, and within the constraints imposed by correlative analyses, to evaluate two versions of the hypothesis: the productivity and ambient energy hypotheses. Focusing on studies extending over 800 km, we found that measures of energy, water, or water-energy balance explain spatial variation in richness better than other climatic and non-climatic variables in 82 of 85 cases. Even when considered individually and in isolation, water/ energy variables explain on average over 60% of the variation in the richness of a wide range of plant and animal groups. Further, water variables usually represent the strongest predictors in the tropics, subtropics, and warm temperate zones, whereas energy variables (for animals) or water-energy variables (for plants) dominate in high latitudes. We conclude that the interaction between water and energy, either directly or indirectly (via plant productivity), provides a strong explanation for globally extensive plant and animal diversity gradients, but for animals there also is a latitudinal shift in the relative importance of ambient energy vs. water moving from the poles to the equator. Although contemporary climate is not the only factor influencing species richness and may not explain the diversity pattern for all taxonomic groups, it is clear that understanding water-energy dynamics is critical to future biodiversity research. Analyses that do not include water-energy variables are missing a key component for explaining broad-scale patterns of diversity.

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Section: Vertebrate Richnessmentioning

confidence: 99%

Energy, Water, and Broad-Scale Geographic Patterns of Species Richness

Hawkins¹,

Field²,

Cornell³

et al. 2003

Ecology

2,010

187

2,366

View full text Add to dashboard Cite

show abstract

“…In general, species richness increased toward the equator (Anderson 1984; Blackburn & Gaston 1996a, 1997Buckton & Ormerod 2002;Cardillo 2002;Cook 1969;Currie 1991;Diniz-Filho et al 2002b;Gaston 2000;Rabinovich & Rapoport 1975;Rahbek & Graves 2001;Schall & Pianka 1978;Tramer 1974). Although methodological differences existed among studies, especially regarding the inclusion or exclusion of wintering ranges in the determination of species richness, results were correlated (Blackburn & Gaston 1996a, 1996b, 1997 or similar (Tramer 1974).…”

Section: Evidence Corroborating the Classical Patternmentioning

confidence: 99%

Latitudinal Gradients of Biodiversity: Pattern, Process, Scale, and Synthesis

Willig

Kaufman

Stevens

2003

Annu. Rev. Ecol. Evol. Syst.

1,737

1,662

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The latitudinal gradient of decreasing richness from tropical to extratropical areas is ecology's longest recognized pattern. Nonetheless, notable exceptions to the general pattern exist, and it is well recognized that patterns may be dependent on characteristics of spatial scale and taxonomic hierarchy. We conducted an extensive survey of the literature and provide a synthetic assessment of the degree to which variation in patterns (positive linear, negative linear, modal, or nonsignificant) is a consequence of characteristics of scale (extent or focus) or taxon. In addition, we considered latitudinal gradients with respect to generic and familial richness, as well as species evenness and diversity. We provide a classification of the over 30 hypotheses advanced to account for the latitudinal gradient, and we discuss seven hypotheses with most promise for advancing ecological, biogeographic, and evolutionary understanding. We conclude with a forward-looking synthesis and list of fertile areas for future research.

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“…Although I sampled too few sites to reach firm conclusions, differences in species composition among assemblages of valleys and plains provide evidence of the heterogeneity of the Monte. According to Rabinovich and Rapoport (1975), in the Monte desert it might be possible to differentiate a bird fauna of the plains under the Andean-Patagonian influence, and another one in the northern valleys and mountain slopes under the Chacoan influence. However, their hypothesis does not explain differences in composition among plain and valley sites.…”

Section: Article In Pressmentioning

confidence: 99%

“…Rabinovich and Rapoport (1975) suggested that bird species richness in the Monte desert changes along the latitudinal gradient as a consequence of diverse origins. Thus, it should be possible to differentiate between a southern bird fauna in the plains under Andean-Patagonian influence, and another one in the northern valleys (''bolsones'') and mountain slopes under Chacoan influence.…”

Section: Introductionmentioning

confidence: 99%

Abundance and diversity of small-bird assemblages in the Monte desert, Argentina

Blendinger¹

2005

Journal of Arid Environments

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Geographical Variation of Diversity in Argentine Passerine Birds

Cited by 66 publications

References 25 publications

Energy, Water, and Broad-Scale Geographic Patterns of Species Richness

Energy, Water, and Broad-Scale Geographic Patterns of Species Richness

Latitudinal Gradients of Biodiversity: Pattern, Process, Scale, and Synthesis

Abundance and diversity of small-bird assemblages in the Monte desert, Argentina

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