Mapping bird assemblages in a Mediterranean urban park: Evidence for a shift in dominance towards medium-large body sized species after 26 years

IF 1.3 4区 生物学 Q2 ZOOLOGY Belgian Journal of Zoology Pub Date : 2020-01-13 DOI:10.26496/bjz.2016.43
C. Battisti, G. Dodaro
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引用次数: 5

Abstract

We assessed the structure of the breeding bird assemblage in a Mediterranean urban park in 2012, and compared it with data gathered in the same area in 1986. Since 1986, Wryneck ( Jynx torquilla ) territories have disappeared from the study area, while breeding pairs of Green Woodpecker ( Picus viridis ) and the introduced Rose-ringed Parakeet ( Psittacula krameri ) have colonized the park. We observed a significant decrease in density of the Italian Sparrow ( Passer italiae ) and a significant increase in Starling ( Sturnus vulgaris ). At the assemblage level, overall bird densities decreased but total bird biomass increased due to the increase in density of (often cavity-nesting) medium to large body sized species (such as woodpeckers, Rose-ringed Parakeet and Starling). A presumed increase in mature tree availability and in predation by synanthropic species (e.g. crows) may explain the high density and biomass of primary and secondary cavity nesters characterized by medium-to-large body sizes. The decline of Sparrows and Wryneck may reflect the decreasing trend at the continental scale.
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绘制地中海城市公园的鸟类群落图:26年后主导地位向中大型物种转变的证据
我们评估了2012年地中海城市公园繁殖鸟类群落的结构,并将其与1986年在同一地区收集的数据进行了比较。自1986年以来,Wryneck(Jynx torquilla)的领地已从研究区消失,而繁殖的绿啄木鸟(Picus viridis)和引入的玫瑰环长尾小鹦鹉(Psittacula krameri)已在公园定居。我们观察到意大利麻雀(Passer italiae)的密度显著降低,而Starling(Sturnus vulgaris)的密度则显著增加。在群落水平上,由于中等至大型体型物种(如啄木鸟、玫瑰环长尾鹦鹉和Starling)的密度增加(通常是洞穴筑巢),总体鸟类密度下降,但总鸟类生物量增加。据推测,成熟树木的可利用性和对突触物种(如乌鸦)的捕食增加,可以解释以中等至大体型为特征的初级和次级穴巢鸟的高密度和生物量。Sparrows和Wryneck的减少可能反映了大陆尺度上的减少趋势。
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来源期刊
Belgian Journal of Zoology
Belgian Journal of Zoology 生物-动物学
CiteScore
1.90
自引率
0.00%
发文量
10
审稿时长
>12 weeks
期刊介绍: The Belgian Journal of Zoology is an open access journal publishing high-quality research papers in English that are original, of broad interest and hypothesis-driven. Manuscripts on all aspects of zoology are considered, including anatomy, behaviour, developmental biology, ecology, evolution, genetics, genomics and physiology. Manuscripts on veterinary topics are outside of the journal’s scope. The Belgian Journal of Zoology also welcomes reviews, especially from complex or poorly understood research fields in zoology. The Belgian Journal of Zoology does no longer publish purely taxonomic papers. Surveys and reports on novel or invasive animal species for Belgium are considered only if sufficient new biological or biogeographic information is included.
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