¿Como pode influír o cambio de temperatura na bioloxía e na distribución das algas bentónicas de Galicia?

Abstract

[EN] In agreement with historical knowledge of benthonic seaweed distribution , changes from 1930 to the present have been considered. The most realistic prediction is that large macrophytes (fucoids and laminarians) could disappear if temperatures keep rising at the same average rate shown so far. On the other hand, the high individual plasticity and the genetic and population variability of the seaweed with two or more generations per year change at a faster rate than temperature variation does. The vertical distribution of the seaweed will be directly affected by a change in sea level, so seaweed would move to higher levels. It could be presumed that chlorophyll a concentration will decrease, allowing for higher light penetration, and seaweed may reach deeper levels than the current ones.

[GA] Segundo o coñecemento histórico que temos sobre a distribución das algas bentónicas considéranse os cambios dende 1930 ata hoxe. A hipóteses mas verosimil é que os grandes macrofitos poderian desaparecer si as temperaturas suben ca progresión media que amosáran neste periodo. Doutra banda discútese a grande plasticidade individual, e a variabilidade xenética e poblacional que as duas o mais xeracios das algas bentónicas presentan , porque a sua taxa de cambio es moito mas rápida que a variacion da temperatura. Unha diferencia no nivel do mar poderia afectar a distribución vertical das algas directamente, co a que as algas desplazarianse pra niveles superiores, ou se as augas teñen menos clorofila e permiten unha maior penetracion da luz mesmo chegarian a niveles mas fundos que os actuais