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Journal Article

Seagrass ecosystem recovery: Experimental removal and synthesis of disturbance studies

Spencer J. Tassone; Carolyn J. Ewers Lewis; Karen J. McGlathery; Michael L. Pace
Limnology and Oceanography · Vol. 69, Issue 7 · pp. 1593-1605 · 2024

Abstract

Net global losses of seagrasses have accelerated efforts to understand recovery from disturbances. Stressors causing disturbances (e.g., storms, heatwaves, boating) vary temporally and spatially within meadows potentially affecting recovery. To test differential recovery, we conducted a removal experiment at sites that differed in thermal stress for a temperate seagrass ( Zostera marina ). We also synthesized prior studies of seagrass recovery to assess general patterns. Seagrass shoots were removed from 28.3 m 2 plots at edge and central sites of a meadow in South Bay, Virginia, USA. We hypothesized faster recovery for edge plots where greater oceanic exchange reduces thermal stress. Contrary to our hypothesis recovery was most rapid in the central meadow matching control site shoot density in 24 months. Recovery was incomplete at the meadow edge and estimated to require 158 months. Differences in recovery were likely due to storm‐driven sediment erosion at the edge sites. Based on data from prior recovery studies, which were primarily on monospecific meadows of Zostera , seagrasses recover across a broad range of conditions with a positive, nonlinear relationship between disturbance area and recovery time. Our experiment indicates position within a seagrass meadow affects disturbance susceptibility and length of recovery. Linking this finding to our literature synthesis suggests increased attention to spatial context will contribute to better understanding variation in recovery rates.

Bibliographic Information

JournalLimnology and Oceanography
PublisherWiley
Publication Date2024-07-01
Publication Year2024
Volume69
Issue7
Pages1593-1605
Document TypeJournal Article
Print ISSN0024-3590
eISSN1939-5590
DOI10.1002/lno.12608
SubjectAquatic Science

Access Information

NARA Access Coverage1997-01-01~Current
Journal Homepagehttps://aslopubs.onlinelibrary.wiley.com/loi/19395590
Publisher PageOpen Publisher Page
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