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Aim: The objective of this work is to characterize, spatially model and to perform the zoning of the aquatic environment in the Curuá-Una HPP reservoir, in the state of Pará, in the Brazilian Amazon. Methods: The data were collected from 77 sampling points distributed over 20 transects in the Curuá-Una reservoir, in November 2016. The data were obtained through descriptive templates of the landscape, and assessment of limnological, bathymetry and georeferencing variables. To describe and model spatial patterns for the limnological Proxies, geostatistical analysis was used with semivariogram fitting, and interpolation using Ordinary Kriging to generate the maps. To determine the degree of association of the landscape Proxies, Correspondence Analysis (CA) was chosen, and to relate the landscape Proxies with the limnological Proxies, Canonical Correspondence Analysis (CCA) was carried out. Results: The results of the analysis of the limnological Proxies showed that the variables presented normal distribution according to the Shapiro-Wilk test (5%) except for transparency and temperature. Most of the variables obtained well-defined, level and good geostatistical analysis. There was a prevalence of gaussian and spherical adjustment models. Different zones in the distribution of the limnological variables in the longitudinal axis of the reservoir were observed. The CA showed a short local gradient in the variables, which effectively characterizes the interface of landscape and human. In Figure 5, the first two axes of the CCA showed 61.17% of the data variability. The limnological 2 Santos, J.A. et al. Acta Limnologica Brasiliensia, 2019, vol. 31, e22 mainly in small populations (Ouborg, 1993). In addition, excessive nutrient intake (nitrogen and phosphorous) through domestic and industrial dumping, decomposing organic material, raising livestock pastures among others, can cause eutrophication of the body and the waves of its physical and chemical properties (Junk et al., 1981; Pagioro et al., 2005; Fearnside, 2015b). The damming of a river results in the disruption of an open transport system by a more closed, accumulation system (Junk & Mello, 1990; Agostinho et al., 2007). Therefore, the new configuration caused by the damming of the river generates a continuum along the longitudinal axis of the reservoir. This continuum begins in the area of river inflow up to where it reaches the dam, and in which three different zones are observed regarding the physical, chemical and biological properties: the fluvial zone (including the delta), the transition zone and the lacustrine zone (Thornton, 1990; Pagioro et al., 2005; Ribeiro-Filho et al., 2011). The different zones mentioned above can be characterized on the basis of limnological variables, as these relate strongly to changes caused by the damming, and which directly impact their spatial

Habitat, limnological signatures and spatial modeling: a zoning proposal for the Curuá-Una hydroelectric reservoir, Pará, Brazil