DOI: 10.5061/dryad.7wm37pw36
title: Data from: Effectiveness of novel hybrid mangrove living shorelines is context dependent

description: Novel designs of hard structures can address challenges to mangrove
 survival and serve as effective hybrid nature-based coastal protection.
 However, a limited understanding of how structures affect mangrove
 survival may lead to ineffective applications of techniques across diverse
 environments, potentially resulting in mangrove planting
 failures. To test how ecologically engineered planting pods may
 enhance mangrove survival and facilitate natural recruitment, we deployed
 them at three sites experiencing erosion in Victoria, Australia. We then
 planted propagules and seedlings inside the pods and on the onshore side,
 and monitored their survival and growth over time. Mangrove pods
 were effective in Altona (bare mudflats with sparse mangroves naturally
 present) when Avicennia marina were planted in pods and on the onshore
 side of pods and in the short-term for those planted in the pods at Lang
 Lang (bare mudflats without historical mangrove presence). However, they
 were ineffective for A. marina planted at Grantville (bare mudflats that
 previously supported mangroves), although they may facilitate natural
 propagule accumulation. Synthesis and applications: Our study
 highlights that the effectiveness of hybrid planting techniques is highly
 context dependent. The absence of mangroves and other vegetative species
 may result in increased erosional processes that challenge mangrove
 survival, which the planting pods may not be able to overcome. These
 findings underscore the need for better understanding of mangrove survival
 thresholds at different life stages and the ecological factors that
 influence them, such as historical mangrove presence. Refining the design
 of hybrid structures to account for site-specific factors will be key to
 improving their effectiveness. Rather than a standalone solution, these
 techniques should be considered as part of a broader range of
 interventions, integrated alongside other restoration and coastal
 protection strategies to maximise ecological and protective benefits
 across diverse coastal settings.
description: # Effectiveness of novel hybrid mangrove living shorelines is context
 dependent
 [https://doi.org/10.5061/dryad.7wm37pw36](https://doi.org/10.5061/dryad.7wm37pw36) ## Description of the data and file structure Year 1 (2020) data: Mangrove survival was monitored and number of leaves was counted for 9 months at Altona and Lang Lang, and for 10 months at Grantville. Year 2 (2021) data: Mangrove survival was monitored across the three sites, 35 months for Altona and Grantville, and 12 months for Lang Lang. ### Files and variables #### File: 2020\_raw2.csv **Description:**  ##### Variables * site: site name * days: number of days from planting * month: number of months from planting * pod: type of pod or control * treatment: position relative to pod (array: inside; inland: onshore) * location: the pod row (either front or back) * rep: array number * no.stake: pods with missing stakes * dead: number of dead mangroves * seed: number of propagules * stem: number of propagules with stems * two: number of seedlings with 2 leaves * four: number of seedlings with 4 leaves * six: number of seedlings with 6 leaves * eight: number of seedlings with 8 leaves * ten: number of seedlings with 10 leaves * twelve: number of seedlings with 12 leaves * total: total number of mangroves in the array #### File: g2y\_data.csv **Description:**  ##### Variables * location: site name * treatment: type of pod or control * site: array number * type: the pod row (either front or back) * pod: position relative to pod (array: inside; inland: onshore) * trt: treatment  * planting: type of mangrove (old: survivor from 2020, seed: propagule planted, seedling: nursery-reared seedling planted) * 2: number alive 2 months after planting * 4: number alive 4 months after planting * 8: number alive 8 months after planting * 12: number alive 12 months after planting * 15: number alive 15 months after planting * 19: number alive 19 months after planting * 22: number alive 22 months after planting * 28: number alive 28 months after planting * 35: number alive 35 months after planting * count: number of monitoring months * month: last month monitored alive * status: status of last monitoring (1: dead, 0: alive) #### File: a2y\_data.csv **Description:**  ##### Variables * location: site name * treatment: type of pod or control * site: array number * type: the pod row (either front or back) * pod: position relative to pod (array: inside; inland: onshore) * trt: treatment  * planting: type of mangrove (old: survivor from 2020, seed: propagule planted, seedling: nursery-reared seedling planted) * 2: number alive 2 months after planting * 5: number alive 5 months after planting * 8: number alive 8 months after planting * 11: number alive 11 months after planting * 15: number alive 15 months after planting * 19: number alive 19 months after planting * 23: number alive 23 months after planting * 28: number alive 28 months after planting * 35: number alive 35 months after planting * count: number of monitoring months * month: last month monitored alive * status: status of last monitoring (1: dead, 0: alive) #### File: l2y\_data.csv **Description:**  ##### Variables * location: site name * treatment: type of pod or control * site: array number * type: the pod row (either front or back) * pod: position relative to pod (array: inside; inland: onshore) * trt: treatment  * planting: type of mangrove (old: survivor from 2020, seed: propagule planted, seedling: nursery-reared seedling planted) * 2: number alive 2 months after planting * 8: number alive 8 months after planting * 12: number alive 12 months after planting * count: number of monitoring months * month: last month monitored alive * status: status of last monitoring (1: dead, 0: alive) ## Code/software R was used to analyse the data as outlined in the manuscript