Náttúrufræðingurinn

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Náttúrufræðingurinn - 2019, Page 54

Náttúrufræðingurinn - 2019, Page 54
Náttúrufræðingurinn 126 4. tafla. Fylgni (Pearson-r) milli meðalþéttleika (einstaklingar/talningarpunkt) og fjölda punkta (af 63) milli ára (2011–2018) þar sem algengustu tegundir fundust við talningar í Rangár- vallasýslu. Marktæk fylgni er feitletruð. – Cor- relation (Pearson’s r) between average density (individuals/plot) and presence (number of 63 plots where a species was found) of common landbirds during monitoring in Rangárvalla- sýsla county in 2011–2018. Significant correla- tion is shown in bold. Tegund Species r P gildi Tjaldur Oystercatcher 0,541 0,165 Heiðlóa Golden Plover 0,946 <0,001 Spói Whimbrel 0,906 <0,01 Jaðrakan Black-tailed Godwit 0,839 <0,01 Hrossagaukur Snipe 0,835 <0,01 Stelkur Redshank 0,549 0,158 Lóuþræll Dunlin 0,870 <0,01 Þúfutittlingur Meadow Pipit 0,795 <0,05 Skógarþröstur Redwing 0,954 <0,001 8. mynd. Tengsl milli meðalhlutfalls punkta þar sem tegund fannst og meðalþéttleika fugla (fuglar/km2) á vegasniði í Rangárvallasýslu 2011-2018. Relationship between the mean proportion of plots (of 63) where a species was found (presence) and the mean density (birds/ km2) of the most common landbirds along a road transect in Rangárvallasýsla county in 2011– 2018 (see fig. 6 for English species names). 7. mynd. Heiðlóa (Pluvialis apricaria) er einn algengasti mófugl á landinu en er ekki svo algeng á athugunarsvæðinu því lítið er af kjörlendi hennar, sem er mólendi, á vegsniðinu. Golden Plover (Pluvialis apricaria) is one of the most abundant landbirds in Iceland but is not so common in the study area due to lack of heathland along the transect. Ljósm./Photo: Tómas G. Gunnarsson.

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