The spatial analysis of modern pollen rain in big bend national park

Siska, Peter P.; Bryant, Vaughn; Jones, John G.

doi:10.1080/01916122.2001.9989560

Cited by 3 publications

(7 citation statements)

References 18 publications

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“…The high productivity and mobility of Pinus pollen is reflected in its comprising a significant component of the pollen assemblage for the entire study area, despite the tree being found at only a few urban sites. Similarly, Pinus has been found to be one of the dominant pollen types, with highest pollen abundances occurring nearest to source areas, in studies elsewhere in the south‐western US (Siska et al. , 2001; see also Webb et al.…”

Section: Discussionmentioning

confidence: 92%

“…Thus, a few anemophilous plants growing regionally, or even just locally, result in a significant background pollen‐rain in Sonoran Desert surface sediment samples (see also Bryant & Schoenwetter, 1987; Bryant & Hall, 1993; Bryant et al. , 1994; Siska et al. , 2001).…”

Section: Discussionmentioning

confidence: 99%

“…However, such research frequently fails to assess patterning in pollen from zoophilous plants, spatial patterning in fine‐scale vegetation data, or how these patterns relate to variations in local environmental and ecological conditions. Moreover, patterns of pollen distribution after it has settled on the ground have been given relatively little attention (Siska et al. , 2001).…”

Section: Introductionmentioning

confidence: 99%

“…However, such research frequently fails to assess patterning in pollen from zoophilous plants, spatial patterning in fine-scale vegetation data, or how these patterns relate to variations in local environmental and ecological conditions. Moreover, patterns of pollen distribution after it has settled on the ground have been given relatively little attention (Siska et al, 2001). As a result, the pollen-vegetation relationship is not especially well constrained; this is particularly so across urban environments and non-forested biomes such as those of the arid south-western USA.…”

Section: Introductionmentioning

confidence: 99%

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The relationship between pollen and extant vegetation across an arid urban ecosystem and surrounding desert in Southwest USA

Stuart

Gries

Hope

2006

Journal of Biogeography

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Aim In this paper, we explore the relationship between pollen concentration in surface soil and extant perennial vegetation across a rapidly urbanizing arid ecosystem along with its surrounding agricultural and native Sonoran Desert land. We also investigate whether taxa behave as expected from known pollination characteristics (e.g. anemophilous vs. zoophilous) and whether the pollen-plant relationship differs between the undeveloped desert and agro-urban regions.Location We used a probability-based sampling scheme at 200, 900-m 2 sites across the Central Arizona-Phoenix region, a 6400-km 2 area of the south-western USA.Methods Pollen-plant abundances were mapped across the study area using interpolation techniques, summary bar charts and scatterplots, then two statistical approaches were applied to examine the data quantitatively. Firstly, we used regression analysis of paired pollen concentration and plant cover data; secondly, pc-ord was used on a cross-matrix (contingency table) containing the presence/ absence scores of both pollen and plants for each taxon at each site. ResultsMapping and quantitative analysis revealed that pollen-plant relationships do vary both between anemophilous and zoophilous groupings and by individual taxon. They also revealed that distribution patterns of both pollen and plant abundance vary consistently across the three main landscape types (desert, urban, agricultural) and that pollen taxa groupings are consistent with pollination method and source plant distribution regardless of landscape type.Main conclusions These findings provide a broad range of comparative data to facilitate palynological reconstruction of past vegetation and aid in assessing types of prehistoric impacts on this vegetation. They also document that significant variation can occur in pollen rain across a city, even for taxa with widely distributed pollen, leading to the conclusion that forecasting pollen distribution patterns for allergy-related pollen types using only one or a few pollen traps is likely to entail substantial error.

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Section: Discussionmentioning

confidence: 92%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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The relationship between pollen and extant vegetation across an arid urban ecosystem and surrounding desert in Southwest USA

Stuart

Gries

Hope

2006

Journal of Biogeography

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“…Our current study reveals that the geospatial approach (Siska et al, 1997) appears to be a practical technique to use when spatial distributions of pollen data need to be understood and interpreted. This is not only true in regional studies of the pollen rain, or in the attempt to link pollen spectra with actual vegetational distributions.…”

Section: Discussionmentioning

confidence: 97%

The Spatial Analysis of Modern Pollen Rain in Big Bend National Park

2001

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The field of spatial analysis is a rapidly developing applied science. One area where this scientific approach can contribute to the analysis and interpretation of field sampling is in the study and distribution of pollen and spores. Pollen grains and spores have distinct spatial distributions that can be identified, analyzed, and modeled in association with significant environmental changes that have influence on resource appraisal and management. In this work the pollen is perceived as a regionalized variable and modeling procedures are used to reproduce spatial distribution patterns, and the continuity of pollen and spore data. As an example, we examine the spatial analysis of surface pollen rain from a desert environment in the Big Bend National Park region located in west Texas (Text- Figure 1).

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The spatial analysis of modern pollen rain in big bend national park

Cited by 3 publications

References 18 publications

The relationship between pollen and extant vegetation across an arid urban ecosystem and surrounding desert in Southwest USA

The relationship between pollen and extant vegetation across an arid urban ecosystem and surrounding desert in Southwest USA

The Spatial Analysis of Modern Pollen Rain in Big Bend National Park

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