Some Population Aspects of Common Tern Sterna hirundo Breeding in Algeria at a Small Mediterranean Island (East Coast of Algeria)
We present the first detailed study of population dynamics, breeding biology and egg measurement of Common Terns. During six years (from 2004 to 2009) of monitoring, from mid-May to mid-August, 74 Common Terns individual were recorded at Laouinet small island, El Tarf, northeast of Algeria, witha fi...
Published in: | Ekológia (Bratislava) |
---|---|
Main Authors: | , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Sciendo
2021
|
Subjects: | |
Online Access: | https://doi.org/10.2478/eko-2021-0008 https://doaj.org/article/0bc918eab17045f8b38a6edab166c67f |
id |
ftdoajarticles:oai:doaj.org/article:0bc918eab17045f8b38a6edab166c67f |
---|---|
record_format |
openpolar |
spelling |
ftdoajarticles:oai:doaj.org/article:0bc918eab17045f8b38a6edab166c67f 2023-05-15T15:56:17+02:00 Some Population Aspects of Common Tern Sterna hirundo Breeding in Algeria at a Small Mediterranean Island (East Coast of Algeria) Khemis Mohamed Dhaya El-Hak Boutabia Lamia Farhi Kamilia Elafri Ali Kahli Asma Telailia Salah 2021-03-01T00:00:00Z https://doi.org/10.2478/eko-2021-0008 https://doaj.org/article/0bc918eab17045f8b38a6edab166c67f EN eng Sciendo https://doi.org/10.2478/eko-2021-0008 https://doaj.org/toc/1337-947X 1337-947X doi:10.2478/eko-2021-0008 https://doaj.org/article/0bc918eab17045f8b38a6edab166c67f Ekológia (Bratislava), Vol 40, Iss 1, Pp 62-69 (2021) unique population sterna hirundo egg parameters little rocky marine environment Ecology QH540-549.5 article 2021 ftdoajarticles https://doi.org/10.2478/eko-2021-0008 2022-12-31T07:50:43Z We present the first detailed study of population dynamics, breeding biology and egg measurement of Common Terns. During six years (from 2004 to 2009) of monitoring, from mid-May to mid-August, 74 Common Terns individual were recorded at Laouinet small island, El Tarf, northeast of Algeria, witha finite population growth rate that indicated an alarming population decline(λ = -0.62: Lambda). Sterna hirundo build its nests (n = 37) in the northeast at a mean distance of 7.58 m from the closest edge of rocks. The nests were closed and ovoid, constituted mainly of mussel shells Sandpit, stems and leaves. Incubation was performed by pairs of common tern and lasted 25.5 ±3.4 days. We recorded a clutch size of 1 to 3 eggs with mean clutch size of 2.45±0.65 (41.24±0.83 × 30.46±0.62 mm). The egg parameters (volume, mass, shape index) varied between the six years of the study. The egg volume (19.24±0.87) depended more on egg width (30.46±0.62), however the egg shape (0.73±0.20) depended negatively on the egg length (41.24±0.83) but not on the egg width. Our results also showed a stabilized hatching success and a best estimation of breeding success. The hatching success did not vary between years: 70.5% in 2004, 68.75% in 2005, 71.42% in 2006, 71.42% in 2007, 69.23% in 2008 and 69.23% in 2009. Article in Journal/Newspaper Common tern Sterna hirundo Directory of Open Access Journals: DOAJ Articles Lambda ENVELOPE(-62.983,-62.983,-64.300,-64.300) Ekológia (Bratislava) 40 1 62 69 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
unique population sterna hirundo egg parameters little rocky marine environment Ecology QH540-549.5 |
spellingShingle |
unique population sterna hirundo egg parameters little rocky marine environment Ecology QH540-549.5 Khemis Mohamed Dhaya El-Hak Boutabia Lamia Farhi Kamilia Elafri Ali Kahli Asma Telailia Salah Some Population Aspects of Common Tern Sterna hirundo Breeding in Algeria at a Small Mediterranean Island (East Coast of Algeria) |
topic_facet |
unique population sterna hirundo egg parameters little rocky marine environment Ecology QH540-549.5 |
description |
We present the first detailed study of population dynamics, breeding biology and egg measurement of Common Terns. During six years (from 2004 to 2009) of monitoring, from mid-May to mid-August, 74 Common Terns individual were recorded at Laouinet small island, El Tarf, northeast of Algeria, witha finite population growth rate that indicated an alarming population decline(λ = -0.62: Lambda). Sterna hirundo build its nests (n = 37) in the northeast at a mean distance of 7.58 m from the closest edge of rocks. The nests were closed and ovoid, constituted mainly of mussel shells Sandpit, stems and leaves. Incubation was performed by pairs of common tern and lasted 25.5 ±3.4 days. We recorded a clutch size of 1 to 3 eggs with mean clutch size of 2.45±0.65 (41.24±0.83 × 30.46±0.62 mm). The egg parameters (volume, mass, shape index) varied between the six years of the study. The egg volume (19.24±0.87) depended more on egg width (30.46±0.62), however the egg shape (0.73±0.20) depended negatively on the egg length (41.24±0.83) but not on the egg width. Our results also showed a stabilized hatching success and a best estimation of breeding success. The hatching success did not vary between years: 70.5% in 2004, 68.75% in 2005, 71.42% in 2006, 71.42% in 2007, 69.23% in 2008 and 69.23% in 2009. |
format |
Article in Journal/Newspaper |
author |
Khemis Mohamed Dhaya El-Hak Boutabia Lamia Farhi Kamilia Elafri Ali Kahli Asma Telailia Salah |
author_facet |
Khemis Mohamed Dhaya El-Hak Boutabia Lamia Farhi Kamilia Elafri Ali Kahli Asma Telailia Salah |
author_sort |
Khemis Mohamed Dhaya El-Hak |
title |
Some Population Aspects of Common Tern Sterna hirundo Breeding in Algeria at a Small Mediterranean Island (East Coast of Algeria) |
title_short |
Some Population Aspects of Common Tern Sterna hirundo Breeding in Algeria at a Small Mediterranean Island (East Coast of Algeria) |
title_full |
Some Population Aspects of Common Tern Sterna hirundo Breeding in Algeria at a Small Mediterranean Island (East Coast of Algeria) |
title_fullStr |
Some Population Aspects of Common Tern Sterna hirundo Breeding in Algeria at a Small Mediterranean Island (East Coast of Algeria) |
title_full_unstemmed |
Some Population Aspects of Common Tern Sterna hirundo Breeding in Algeria at a Small Mediterranean Island (East Coast of Algeria) |
title_sort |
some population aspects of common tern sterna hirundo breeding in algeria at a small mediterranean island (east coast of algeria) |
publisher |
Sciendo |
publishDate |
2021 |
url |
https://doi.org/10.2478/eko-2021-0008 https://doaj.org/article/0bc918eab17045f8b38a6edab166c67f |
long_lat |
ENVELOPE(-62.983,-62.983,-64.300,-64.300) |
geographic |
Lambda |
geographic_facet |
Lambda |
genre |
Common tern Sterna hirundo |
genre_facet |
Common tern Sterna hirundo |
op_source |
Ekológia (Bratislava), Vol 40, Iss 1, Pp 62-69 (2021) |
op_relation |
https://doi.org/10.2478/eko-2021-0008 https://doaj.org/toc/1337-947X 1337-947X doi:10.2478/eko-2021-0008 https://doaj.org/article/0bc918eab17045f8b38a6edab166c67f |
op_doi |
https://doi.org/10.2478/eko-2021-0008 |
container_title |
Ekológia (Bratislava) |
container_volume |
40 |
container_issue |
1 |
container_start_page |
62 |
op_container_end_page |
69 |
_version_ |
1766391741247651840 |