Salinity tolerance of macroalgae Gracilaria birdiae
| Autor: | Gustavo Gonzaga Henry-Silva, Ambrosio Paula Bessa Junior, Joseanna de Paiva Alves |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
0106 biological sciences
Abiotic component Biomass (ecology) General Veterinary biology growth Agriculture (General) saline stress Agriculture biology.organism_classification 010603 evolutionary biology 01 natural sciences S1-972 Salinity limiting factor Gracilaria birdiae Animal science Algae Animal Science and Zoology heterocyclic compounds Agronomy and Crop Science 010606 plant biology & botany |
| Zdroj: | Ciência Rural, Vol 51, Iss 1 (2020) Ciência Rural v.51 n.1 2021 Ciência Rural Universidade Federal de Santa Maria (UFSM) instacron:UFSM |
| ISSN: | 1678-4596 |
| Popis: | This study aimed to determining the manner in which salinity influenced the growth of the macroalgae Gracilaria birdiae, with the objective of identifying its tolerance limits to this abiotic variable. The specimens were submitted to nutrient-enriched water of varying salinities (0, 10, 20, 30, 40, 50, and 60 ppt) for a 30-day period. Initially, under extreme salinity conditions (0 and 60 ppt) the growth of the G. birdiae suffered a negative impact. The macroalgae biomass exposed to 0 and 10 ppt salinities showed a reduction from day six until the experiment was completed. The macroalgae biomass exposed to salinities 20, 30, 40, and 50 ppt showed an increase, with no significant differences between the four treatments. This suggested that this salinity range was comfortable for this species to develop. We concluded that salinity is a crucial parameter which controls the growth of the G. birdiae. This seaweed was negatively influenced when exposed to values equal to or below 10 ppt and equal to 60 ppt, demonstrating good tolerance to salinities of 20, 30, 40 and 50 ppt. |
| Databáze: | OpenAIRE |
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