Mean conservation gain, G, observed in five different species and life history types for nine different conservation actions.

We define “conservation gain” as G = (r-r0)×200, where the model is set up so that growth rate is zero before applying either stochasticity or the conservation action. Then r0 is the growth rate with stochasticity but without the conservation action while r is the growth rate with both stochasticity and the conservation action. Na for Action-9 denotes the adult population. All results are based on simulations using Model 2. Organisms in age-class k = 0 are referred to as “recruits”; other pre-reproductive individuals are “juveniles”. Larger sensitivities shown are in bold for emphasis. Species are DE = Diomedea exulans (albatross), OO = Orchinus orca (orca), DC = Dermochelys coriacea (leatherback sea turtle), CP = Chrysemys picta (Striped bass) and LG = Lobatus gigas (Queen conch).

我们将“保护增益（conservation gain）”定义为G=(r - r₀)×200。该模型设定为：在引入随机性或实施保护措施之前，种群增长率为0。其中，r₀代表仅存在随机性但未采取保护措施时的种群增长率，r则代表同时存在随机性与保护措施时的种群增长率。Action-9对应的Nₐ表示成体种群。所有结果均基于模型2的模拟实验。年龄层级k=0的个体被称为“补充个体（recruits）”，其余未达到繁殖期的个体则为“幼体（juveniles）”。为突出显示，数值更大的敏感性结果将以粗体标注。本研究涉及的物种及其代号如下：DE = 漂泊信天翁（Diomedea exulans）、OO = 虎鲸（Orchinus orca）、DC = 棱皮龟（Dermochelys coriacea）、CP = 锦龟（Chrysemys picta，原文标注为条纹石鮨）、LG = 女王凤凰螺（Lobatus gigas）。