Добавить новость
ru24.net
News in English
Декабрь
2024
1 2 3 4 5 6 7 8 9 10 11 12 13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31

Strong linkage between parrotfish functions and habitat characteristics

0

by Ángela Randazzo-Eisemann, Ana Lilia Molina-Hernández, Lorenzo Alvarez-Filip, Joaquín Rodrigo Garza-Pérez

Phase shifts from hard coral to macroalgae have led to the formulation of a top-down herbivory paradigm, whose assumption is that a reduction in herbivory is the primary driver of these changes. Caribbean parrotfish from Scarus and Sparisoma genera are usually known as main reef herbivorous. Yet, they are a diverse group of organisms that perform multiple functions, including the bioerosion of reef structures. Generalizing functions at the group level likely explains why the direct effects of parrotfish on macroalgae regulation are not always evident. In this study, we tested the hypothesis that parrotfish potential functions are strongly linked to the habitat’s benthic characteristics. Furthermore, we expect that the parrotfish bioerosion potential will be highly sensitive to changes in benthic conditions, while herbivory will be more robust. We conducted in situ benthic and parrotfish surveys across the diverse reefscape of the remote Alacranes Reef, the most extensive system in the Gulf of Mexico. Both bioerosion and herbivory potential were highest in the most complex and structured sites, while only macroalgae removal was high in deep low-coral cover sites dominated by fleshy macroalgae. Interestingly, both functions were highly diminished in shallow and reticulated inner reefs dominated by turf algae and cyanobacteria, suggesting that even the herbivory function can be depleted under unfavorable benthic conditions. Our findings highlight the need to reconsider parrotfish management strategies to account for the specific roles of different species and consider reciprocal benthic-fish interactions.



Moscow.media
Частные объявления сегодня





Rss.plus




Спорт в России и мире

Новости спорта


Новости тенниса
WTA

Екатерина Александрова уступила в первом круге турнира WTA-125 в Лиможе






Артём Туров – об усилении сотрудничества приграничных регионов России и Беларуси

Лепёхин назвал главного фаворита в борьбе за чемпионство РПЛ

Лепёхин ответил, есть ли кризис в «Зените»

Смоленские единороссы передали в белгородский госпиталь около 200 коробок с медикаментами