Is the Seasonal Variation of Abundance and Species Richness in Birds Explained by Energy Availability?

Pfeifer, Robert; Stadler, Jutta; Brandl, Roland

doi:10.3161/00016454ao2017.52.2.005

Cited by 6 publications

(6 citation statements)

References 27 publications

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“…This finding agrees with our original hypothesis stating that in climatically stable páramos, where seasonality is limited, species would tend to accumulate and narrow-niche species would be favored. Previous studies have agreed with this hypothesis for animals (Somveille et al, 2015;Pfeifer et al, 2018) and also plants ( Morueta-Holme et al, 2013), because short-term climatic stability means less migrations and important adaptations, i.e., broad-niche species, resulting in relatively species-poor ecosystems (Pianka, 1966;MacArthur et al, 1972). However, in lesser means, our results contradict the seasonality hypothesis.…”

Section: Climatic Drivers Of Richnesssupporting

confidence: 70%

“…(2) Seasonality: the variation in environmental conditions at multi-temporal scales has been proposed to drive species richness patterns by influencing the co-existence and accumulation of species (Jablonski et al, 2006;Fine, 2015;Pfeifer et al, 2018). For instance, climatic stability over centuries and millennia can decrease the likelihood of extinctions and promote the saturation of niche spaces, resulting in important species richness (Ordonez and Svenning, 2017;Fordham et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

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Fine-Scale Plant Richness Mapping of the Andean Páramo According to Macroclimate

et al. 2019

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Understanding the main relationships between the current macroclimate and broad spatial patterns of plant diversity is a priority in biogeography, and although there is an important body of studies on the topic worldwide, tropical mountains remain underrepresented. Because understanding primary drivers of diversity patterns in the Andean páramo is still in its infancy, we focused on evaluating the role of the current macroclimate in form of three complementary hypotheses, energy, seasonality and harshness, in explaining local variation of plant species richness. We relied on 1,559 vegetation plots that offered a fine-scale outlook on real species assemblages due to community rules and species' interactions with their surrounding environment, including climate. Generalized Least Squares (GLS) regression models provided insight on the significance of the different hypotheses in explaining local plant richness, but only the energy and seasonality hypotheses received partial support. The best model was then combined with spatial interpolation Kriging modeling techniques to project species richness for a standardized 25 m 2 plot throughout the entire páramo biogeographical province. We highlighted a North-South increase in richness with several species-rich areas, potential local biodiversity hotspots, independent of the general gradient: the Amotape-Huancabamba zone, Sangay and Cotacachi areas, and eastern Venezuelan Andes. Our endeavor to finely map local richness is the first effort predicting macroecological patterns in the emblematic Andean páramo and contributes novel biogeographical knowledge useful to further support in-depth research and conservation focus in the northern Andes.

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Section: Climatic Drivers Of Richnesssupporting

confidence: 70%

Section: Introductionmentioning

confidence: 99%

Fine-Scale Plant Richness Mapping of the Andean Páramo According to Macroclimate

et al. 2019

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“…No other taxonomic group shows stronger intra-annual geographic redistribution of species occurrence and abundance than birds. Each year, billions of individuals (Hahn et al 2009;Dokter et al 2018) of an estimated 1,855 species (19% of all extant bird species; Kirby et al 2008, a percentage that strongly increases with latitude; Somveille et al 2013) migrate toward lower latitudes in autumn and higher latitudes in spring in response to seasonal fluctuations in resource availability (Strong et al2015;Thorup et al 2017;Ng et al 2022) and unfavorable weather conditions given some species' physiological limitations (Pfeifer et al 2018). These migratory movements produce seasonal patterns of biomass, abundance, and species richness (Ng et al2022).…”

Section: Introductionmentioning

confidence: 99%

Decoupled spatiotemporal patterns of avian taxonomic and functional diversity

Jarzyna

Stagge

2022

Preprint

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Each year, seasonal bird migration leads to an immense redistribution of species occurrence and abundances, with pervasive, though unclear, consequences for patterns of multi-faceted avian diversity. Here, we uncover stark disparities in spatiotemporal variation between avian taxonomic and functional diversity across the continental US. In the eastern US, the temporal patterns of taxonomic and functional diversity are diametrically opposed, with functional richness highest in winter despite seasonal loss of species, and the remaining most abundant species amassed in a few regions of the functional space that likely reflect the resources available in winter. In contrast, in the western US, both species and functional richness are high during the breeding season, and species’ abundances are regularly distributed and widely spread across the functional space. We anticipate that the uncovered complexity of spatiotemporal associations among avian diversity measures will be the catalyst for adopting an explicitly temporal framework for multi-faceted biodiversity analysis.

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“…Accepting new conditions, or synurbization sensu M. Luniak [4,25], provides the species with some benefits such as a milder microclimate, food, places to hide etc. (as well as dangers such as heavy metal poisoning [36], stress [26] and behavioral changes [32]). Thus, this phenomenon is common for many animal species.…”

Section: Introductionmentioning

confidence: 99%

“…Primarily, it was decided not to look at avian community in a discrete way, i.e. during breeding or non-breeding season, but to concern the composition dynamics as a continual process as in [32].The objectives were (1) to reveal the species composition and community structure of birds in urban greenery during throughout the year, (2) to define the time of peaks of diversity, abundance of birds and stability of the whole community, (3) to study changes in ecological (viz. trophic) and biogeographical structure of bird communities, and (4) to reveal the abundance dynamics of most common forest bird species.…”

Section: Introductionmentioning

confidence: 99%

Annual dynamics of bird communities in urban parks in Lviv, Ukraine: preliminary analysis of diversity and composition variability

Dubovyk

2019

Biol. Stud.

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Species and numeric composition of bird communities were analyzed in parks of Lviv based on results of monthly censuses on 20 linear transects on eight study plots. During the year, 79 bird species that belong to eight taxonomic orders were registered Birds' diversity was assessed by species number and Simpson index and it varies throu ghout the year and denotes higher level during the breeding season. Similarly, birds' density is the highest in breeding season, but it also has a less expressed peak in winter period. This shows that biotopical preferences to be presented in urban greenery of parti cular birds are especially notable only while breeding, but in non-breeding season those birds stay resident in scale of the city though disperse in other habitat types. Between-months, stability of species composition (assessed by Jaccard index) and numeric composition (by Bray-Curtis index) was analyzed. Communities were the most stable during the breeding season as birds are related to their nesting sites. According to zoogeographic classification, European species dominate during all months. Siberian, Transpalearctic and Medite rranean species also play role in forming of the community structure. The main food resources type which compensates energy demands of birds during the breeding season is inver te brates; this shows the importance of birds in controlling the abundance of invertebrates in urban ecosystems. Seeds are also important food resour ce types, especially during the non-breeding period. Abundance variability of part of spe cies is related with season. Three main groups of these species were defined: breeding migrants (mainly songbirds such as Fringilla coelebs, Erithacus rubecula, Sylvia atricapilla, Phylloscopus collybita etc., also Columba palumbus), wintering migrants (Spinus spinus, Turdus viscivorus, Bombycilla garrulus, Pyrrhula pyrrhula) and residents (typical synanthropic species whose numbers vary: Turdus merula, Coccothraustes coccothraustes, Troglodytes 80 O. Dubovyk ISSN 1996-4536 (print) • ISSN 2311-0783 (on-line) • Біологічні Студії / Studia Biologica • 2019 • Том 13/№2 • С. 79-98 troglodytes, Cyanistes caeruleus etc.). The last ones, probably, migrate in non-breeding seasons to other habitat types, that can explain their abundance variability. (on-line) • Біологічні Студії / Studia Biologica • 2019 • Том 13/№2 • С. 79-98Osvytsky Gai park is located in the southern suburbs near the Zubra river. A = 82 ha, n t = 2. Acer platanoides, Alnus glutinosa, Quercus robur and Fraxinus excelsior are the most common.Bird surveys. Bird surveys were conducted on each linear transect every month during a period from December 2017 to November 2018. Linear transects method was chosen and data obtained using this method are the most representative concerning the whole community structure [18,3]. Birds were located at the same distance (50 m on both sides from observer) in all months. Surveys were carried out during 20-30 min time period on each transect in morning hours of days without strong wind, rain, o...

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Is the Seasonal Variation of Abundance and Species Richness in Birds Explained by Energy Availability?

Cited by 6 publications

References 27 publications

Fine-Scale Plant Richness Mapping of the Andean Páramo According to Macroclimate

Fine-Scale Plant Richness Mapping of the Andean Páramo According to Macroclimate

Decoupled spatiotemporal patterns of avian taxonomic and functional diversity

Annual dynamics of bird communities in urban parks in Lviv, Ukraine: preliminary analysis of diversity and composition variability

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