Habitat degradation is considered a huge threat to biodiversity and could become even worse with climate change. If the current situation of Atlantic Forest is not good, then the Restinga ecosystems are even worse due to the high urbanization rate. Glaucomastix littoralis, a lizard species that is endemic and restricted to Restinga areas of Rio de Janeiro State- Brazil, has become even more threatened in the last 10 years mainly due to degradation of physical vegetation structure, since it is closely related to local vegetation. Fieldwork was carried out in the Restingas of Grussaí, Jurubatiba, Maricá and Marambaia. We performed two density sampling methods and analyzed the degradation index and loss of substrate in each area aiming to compare and monitor the results over a 13 year sampling period. According to method I, the population density of G.littoralis presented smaller variation between 2013 and 2018, as did the amount of degradation elements, while method II showed an increase in population density. The Jurubatiba Restinga was considered the best area for maintaining this species, while Marambaia is the area where the species are most at risk. The density sampling methods utilized were efficient for understanding the lizards’ responses to small-scale and large-scale degradation items. Monitoring the only four populations of this species and the preservation status of each Restinga where it occurs is essential for tracking the species’ density variations and for preserving it.

中文翻译：

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六年后……巴西某地方性和濒危蜥蜴物种的新种群监测数据

生境退化被认为是对生物多样性的巨大威胁，并且随着气候变化的加剧甚至会更加严重。如果当前大西洋森林的状况不好，那么由于城市化率高，Restinga生态系统将更加糟糕。滨海青光眼蜥蜴是一种特有的蜥蜴，仅局限于巴西里约热内卢州的雷丁加地区，在过去的十年中，由于与当地植被密切相关，物理植被的退化，使其受到的威胁更大。在格鲁塞伊（Grussaí），朱鲁巴蒂巴（Jurubatiba），马里卡（Maricá）和马兰巴亚（Marambaia）的Restingas进行了实地调查。我们进行了两种密度采样方法，并分析了每个区域的降解指数和基材损失，旨在比较和监测13年采样期内的结果。根据方法一，石tor的种群密度在2013年至2018年之间的变化较小，降解元素的数量也有所变化，而方法II显示人口密度增加。Jurubatiba Restinga被认为是维持该物种的最佳区域，而Marambaia是该物种风险最高的区域。所使用的密度采样方法对于了解蜥蜴对小规模和大规模降解物品的反应非常有效。监测该物种仅有的四个种群以及每个该物种出现的Restinga的保存状态，对于跟踪该物种的密度变化并进行保护至关重要。