The sustainability of indigenous lands in Amapá state

We herein assess population growth in indigenous lands (ILs) Wajãpi, Uaçá, Galibi and Juminã in Amapá State-Brazil, which has influenced deforestation increase. We assumed the hypothesis of no association between demographic density and deforestation because population density in these areas is low. We used population growth, deaths, and deforestation data by considering a historical series (2002-2018). Demographic data have shown that Uaçá and Wajãpi ILs recorded the highest population growth. The highest demographic density was observed for Galibi ILs and the lowest one for Wajãpi ILs. The highest deforestation was observed for Uaçá ILs and the lowest one for Juminã ILs. Therefore, indigenous lands in Amapá State have an essential role in forest conservation.We herein assess population growth in indigenous lands (ILs) Wajãpi, Uaçá, Galibi and Juminã in Amapá State-Brazil, which has influenced deforestation increase. We assumed the hypothesis of no association between demographic density and deforestation because population density in these areas is low. We used population growth, deaths, and deforestation data by considering a historical series (2002-2018). Demographic data have shown that Uaçá and Wajãpi ILs recorded the highest population growth. The highest demographic density was observed for Galibi ILs and the lowest one for Wajãpi ILs. The highest deforestation was observed for Uaçá ILs and the lowest one for Juminã ILs. Therefore, indigenous lands in Amapá State have an essential role in forest conservation.We herein assess population growth in indigenous lands (ILs) Wajãpi, Uaçá, Galibi and Juminã in Amapá State-Brazil, which has influenced deforestation increase. We assumed the hypothesis of no association between demographic density and deforestation because population density in these areas is low. We used population growth, deaths, and deforestation data by considering a historical series (2002-2018). Demographic data have shown that Uaçá and Wajãpi ILs recorded the highest population growth. The highest demographic density was observed for Galibi ILs and the lowest one for Wajãpi ILs. The highest deforestation was observed for Uaçá ILs and the lowest one for Juminã ILs. Therefore, indigenous lands in Amapá State have an essential role in forest conservation.We herein assess population growth in indigenous lands (ILs) Wajãpi, Uaçá, Galibi and Juminã in Amapá State-Brazil, which has influenced deforestation increase. We assumed the hypothesis of no association between demographic density and deforestation because population density in these areas is low. We used population growth, deaths, and deforestation data by considering a historical series (2002-2018). Demographic data have shown that Uaçá and Wajãpi ILs recorded the highest population growth. The highest demographic density was observed for Galibi ILs and the lowest one for Wajãpi ILs. The highest deforestation was observed for Uaçá ILs and the lowest one for Juminã ILs. Therefore, indigenous lands in Amapá State have an essential role in forest conservation

REPRODUCTIVE PHENOLOGY OF Bertholletia excelsa BONPL. IN UPLAND FOREST IN MAZAGÃO, AMAPA

São avaliados o comportamento fenológico de nove indivíduos de Bertholletia excelsa Bonpl. (castanheira do Pará), por meio de fenofases: floração, frutificação/disseminação e mudança foliar no município de Mazagão, Estado do Amapá. O trabalho foi realizado por meio de monitoramentos mensais, durante o período de 28 meses. A espécie Betholletia excelsa apresentou tendência ao padrão reprodutivo anual. A floração ocorrendo, predominantemente, durante a estação chuvosa, com pico no mês de abril. A frutificação mostoru-se anual e longa, com maior incidência de frutos maduros nos meses de outubro a dezembro. Já a disseminação de frutos coincidiu com o desenvolvimento dos mesmos, obtendo maior desenvolvimento na estação chuvosa, com pico no mês de fevereiro. Quanto à mudança foliar, a espécie apresentou padrão perenifólio, com maior queda de folhas durante o período de menor precipitação pluviométrica.Palavras-chave: fenofases, floresta tropical, pluviometria.They are appraised the nine individuals' Bertholletia excelsa Bonpl. (castanha do Pará), through the phenophases: flowering, fructification/dissemination and change to leaves in the district of Mazagão, State of Amapá. The work was accomplished through monthly observation, during the period of 28 months. The species Bertholletia excelsa presented tendency to the annual reproductive pattern. The flowering happening, predominantly, during the rainy station, with pick in the month of april. The fructification was shown annual and long, with larger incidence of mature fruits the months of october to december. Already the dissemination of the fruits coincided with the development of the same ones, obtaining larger development in the rainy station, with pick in the month of february. As for the change the species to leaves it presented pattern perennial with larger fall of leaves during the period of smaller precipitation pluviometric.Keywords: Phenophases; Rainforest; Pluviometry