Modelling the Relationship Between Bird Population Variables and Hedgerow and Other Field Margin Attributes. I. Species Richness of Winter, Summer and Breeding Birds

Parish, T.; Lakhani, K. H.; Sparks, Tim H.

doi:10.2307/2404166

Cited by 137 publications

(74 citation statements)

References 10 publications

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“…These authors found a consistent trend, though not statistically significant, for higher bird densities in game than in non-game hedges. This result is inconsistent with studies suggesting that tall and wide hedges are the most favourable for bird diversity and abundance (Parish et al 1994, Macdonald & Johson 1995, Sparks, Parish & Hinsley 1996. The discrepancy may be because the benefits of wide verges and good vegetation cover of the game hedges served to offset any detriment arising from the lack of height and width in the hedges surveyed by Hinsley et al (1999); these hedges were generally tall irrespective of game management, and it is known that once above a critical height of about 2-3 m, further increases in height may not significantly affect birds (Macdonald & Johson 1995).…”

Section: Hedgerowscontrasting

confidence: 95%

Ecological effects of game management: does supplemental feeding affect herbivory pressure on native vegetation?

et al. 2015

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Context Supplemental feeding of large mammalian herbivores is a common management tool mainly aimed at promoting healthy populations and at increasing productivity and trophy sizes. Such management measure may indirectly affect herbivore effects on plant communities through altered foraging patterns. The quantification of the ecological effects of large herbivore management is important for designing holistic management and conservation programs. Aims Here we aimed at quantifying the ecological effects of supplemental feeding of Iberian red deer, Cervus elaphus hispanicus, on the composition of and on the browsing effects on Mediterranean woody plant community. Methods An experiment was set up in a hunting rangeland located in central Spain, where female deer were kept in enclosures with either exclusive access to natural forages or with additional ad libitum access to a nutritionally rich concentrate. The experiment also included a control area where deer were absent. Key results We observed significant differences in browsing impacts among the supplemented, non-supplemented and control areas, and such effect varied for the different plant species. Plant species which nutritional content complemented that of fodder were more highly consumed, for instance, Erica spp., which digestible fibre content is higher and N content lower than that of provided fodder. The presence of deer and the concentrate supplied, instead, did not influence the relative abundances of shrub species. Conclusions Artificial supplemental feeding provided to ungulates led to increased browsing on plant species which nutritional composition complemented that of the supplement provided. Implications So as to alleviate herbivory impact on all shrubs, we suggest that composition of supplemental feeding should adjust both to the natural forage availability and quality and to ungulate requirements across seasons.

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Section: Hedgerowscontrasting

confidence: 95%

Ecological effects of game management: does supplemental feeding affect herbivory pressure on native vegetation?

et al. 2015

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“…Traditional studies investigating biodiversity have often explored the relationship between species richness (the number of different species recorded in a region) and a set of OPEN ACCESS environmental factors at a single spatial scale [4][5][6][7]. The selection of the spatial scale when studying biodiversity is particularly pertinent, as factors and processes that are found to be important at one scale frequently prove to be less so at another scale, rendering interpretation and prediction difficult [8].…”

Section: Introductionmentioning

confidence: 99%

Exploring Spatial Scale, Autocorrelation and Nonstationarity of Bird Species Richness Patterns

Holloway

Miller

2015

IJGI

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Abstract:In this paper we explore relationships between bird species richness and environmental factors in New York State, focusing particularly on how spatial scale, autocorrelation and nonstationarity affect these relationships. We used spatial statistics, Getis-Ord Gi*(d), to investigate how spatial scale affects the measurement of richness "hot-spots" and "cold-spots" (clusters of high and low species richness, respectively) and geographically weighted regression (GWR) to explore scale dependencies and nonstationarity in the relationships between richness and environmental variables such as climate and plant productivity. Finally, we introduce a geovisualization approach to show how these relationships are affected by spatial scale in order to understand the complex spatial patterns of species richness.

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“…Nevertheless, some croplands provide considerable food in soil invertebrates and seed (Lack 1992). Areas with more diversity in farm habitats and in farming practices show far greater diversity of bird life (Parrish et al 1994;Bignal and McCraken 1996;Newton 1998).…”

mentioning

confidence: 99%

Winter Bird Use of Urban and Rural Habitats in Ontario

Smith

2003

Can Field Nat

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This study examined variation in winter bird diversity, abundance, biomass and species and guild composition on plots in farmland, rural forests, mixed rural habitat, cities and three categories of urban natural areas in southern Ontario. Small (<20 g), insectivorous, upper canopy, bark foraging and forest species were more prevalent in rural mixed habitat, urban natural areas and especially rural forests. Larger (20-100 g), ground feeding and omnivorous birds typified cities and farms. Many bird species classified as forest, forest edge and field species during summer also favored these same habitats during winter. The 52 sample plots can be accurately classified into the seven habitat categories through discriminant analysis using the percentages of small species, insectivores, forest species and alien species. Urban natural areas, forests and mixed rural habitat showed the highest diversity while cities and farms showed the lowest diversity. Both bird abundance and biomass were highest in urban natural areas with open water and urban residential and commercial areas, whereas both were lowest in farmland.

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Modelling the Relationship Between Bird Population Variables and Hedgerow and Other Field Margin Attributes. I. Species Richness of Winter, Summer and Breeding Birds

Cited by 137 publications

References 10 publications

Ecological effects of game management: does supplemental feeding affect herbivory pressure on native vegetation?

Ecological effects of game management: does supplemental feeding affect herbivory pressure on native vegetation?

Exploring Spatial Scale, Autocorrelation and Nonstationarity of Bird Species Richness Patterns

Winter Bird Use of Urban and Rural Habitats in Ontario

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