eJournal Articles :: Kembali ::

Investigating sea urchin densities critical to macroalgal control on degraded coral reefs

No. Panggil : eja-21-0552
Nama Orang : Dajka, Jan-Claas Beasley, Victoria Gendron, Gilberte Graham, Nicholas AJ
Penerbitan : [Place of publication not identified] : Cambridge - Crime, 2021
AbstrakThere is an assumption that tropical sea urchins are macroalgal grazers with the ability to con trol macroalgal expansion on degraded coral reefs. We surveyed abundances of Echinothrix calamaris, an urchin species common in the western Indian Ocean on 21 reefs of the inner Seychelles and predicted their density using habitat predictors in a modelling approach. Urchin densities were greatest on patch reef habitat types and declined with increasing macro algal cover. Next, we experimentally investigated the macroalgae-urchin relationship by pen ning two sea urchin densities on macroalgal fields. Over six weeks, the highest density treatment (4.44 urchins m-2 ) cleared 13% of macroalgal cover. This moderate impact leads us to conclude that controlling macroalgal expansion is not likely to be one of the main functions of E. calamaris in the inner Seychelles given the current densities we found in our surveys (mean: 0.02 urchins m-2 , maximum: 0.16 urchins m-2 ).
Entri Tambahan Nama Orang
001 Hak Akses (open/membership)membership
Kata KunciEchinotrix calamaris; functional importance; habitat predictors; Sargassum; sea urchin grazing; Seychelles; penning
ISSN
Tahun Terbit2021
No. Indukeja-21-0552
Entri Sumber DataCambridge - Crime
Entri Utama Nama orangDajka, Jan-Claas; Beasley, Victoria; Gendron, Gilberte; Graham, Nicholas AJ
Volume, Nomor, Tahun dan Hlm.vol. 48, no. 2, p. 136-141
Entri Utama Nama Badan
Barcodeeja-21-0552
Subjek Topik
Judul UtamaInvestigating sea urchin densities critical to macroalgal control on degraded coral reefs
Kode Bahasaeng
Sumber KoleksiPerpustakaan Nasional
No. Panggil No. Barkod Ketersediaan
eja-21-0552 eja-21-0552 TERSEDIA
Shelf
 investigating_sea_urchin_densities_critical_to_macroalgal_control_on_degraded_coral_reefs.pdf :: Unduh

LOGIN required

Catatan: Hanya file pdf yang dapat dibaca online
Ulasan:
Tidak ada ulasan pada koleksi ini: 58110
Tidak ada abstrak pada koleksi ini
:: Perpustakaan Sekolah Tinggi Ilmu Kepolisian (STIK)
LONTAR 4 :: Library Automation and Digital Archive