Ruwa Negro-Ruwa San Sun mangroves

Yankin **mangroves na Rio Negro-Rio San Sun** (WWF ID:NT1431) ya ƙunshi ƙananan dazuzzukan mangrove marasa shinge a bakin tekun Caribbean na Costa Rica, daga ƙaramin yanki a cikin kan iyaka da Nicaragua a yamma zuwa kan iyaka da Panama a gabas. Gabar tekun da ke kan wannan yanki fili ne mai faɗi, mai laushi, kuma mangroves ƙaramin ɓangare ne kawai na wurare daban-daban na mazauna gida ciki har da fadama, gandun daji masu gauraye, tafkuna na bakin teku, gadajen ciyawar teku, da rairayin bakin teku masu yashi. Yawancin yankin " kogin ruwa baƙi " ne - hanyoyin ruwa masu motsi a hankali a cikin dazuzzukan daji tare da ruwa da ya lalace da abubuwa masu lalacewa. Waɗannan mangroves suna lalacewa lokaci-lokaci ta hanyar guguwa, kamar a cikin 1988 daga Guguwar Joan, amma suna iya sake farfadowa.   

## Wuri da bayanin
Ana samun ƙarancin mangwaro a wannan gabar teku saboda yawan ruwan da ke fitowa daga kogunan ciki. Mafi girman yanki yana arewa a bakin kogin San Juan da kuma kogin Colorado na Costa Rica . Mangrove na arewa ya miƙe tare da tafkin Tortuguero har zuwa bakin kogin Reventazón . Akwai wasu mangwaro a yammacin birnin Limón, a kusa da Tekun Moin .  Nan da nan cikin ƙasa, yankin ya koma ga dazuzzukan da ke da danshi a Isthmian-Atlantic, fiye da tasirin ruwan gishiri. 

## Yanayi
Yanayin wannan yankin na muhalli shine *yanayin ruwan sama na wurare masu zafi* ( Köppen climate classification (Am) ). Wannan yanayi yana da yanayin zafi mai daidaito a duk shekara (duk watanni sun fi  matsakaicin zafin jiki), da kuma lokacin bushewa mai ƙarfi. Watan da ya fi bushewa yana da ƙasa da mm 60 na ruwan sama, amma ya fi (100-(matsakaicin/25) mm. Wannan yanayi yana tsakanin dazuzzukan ruwan sama na wurare masu zafi da kuma savannah na wurare masu zafi. Watan bushewa yawanci yana faruwa ne a ko bayan hunturu a Arewacin Hemisphere.   Ruwan sama yana faruwa ne a wannan yanki na muhalli yana cikin mafi girma a duniya, wanda yakan kai 6,000 mm/shekara. Lokacin bushewa (idan aka kwatanta) shine Janairu zuwa Afrilu. 

## Flora da fauna
Nau'in bishiyoyin da ke da alaƙa da yanayin muhalli sune mangrove ja ( *Rhizophora mangle* ), mangrove baƙi ( *Avicennia germinans* ), mangrove fari ( *Lagncularia racemosa* ), mangrove button ( *Conocarpus erectus* ) da kuma nau'in *Rhizophora harrisonii* da ke da alaƙa da mangrove.  Wani fasali na wannan yanayin muhalli shine kasancewar yollila ( *Raphia taedigera* ), itacen dabino mai ruwa-ruwa.

Wannan yankin na Costa Rica yana da bambancin nau'ikan halittu masu yawa. Ƙidayar da aka yi a yankin da ke kewaye da mangroves ta nuna nau'ikan dabbobi masu shayarwa 120, nau'ikan tsuntsaye 300, da nau'ikan dabbobi masu rarrafe da kuma masu kama da ruwa 100.  Dabbobi masu shayarwa a yankin sun haɗa da pacas ( *Agouti paca* ), biri mai launin baƙi mai mantled ( *Alouatta palliata* ), biri mai gizo-gizo na Geoffrey ( *Ateles geoffroyi* ), capuchin mai fuskoki fari ( *Cebus capucinus* ), sloths masu ƙafa uku masu launin ruwan kasa ( *Bradypus variegatus* ), anteaters masu siliki ( *Cyclopes didactylus* ) da armadillos masu tambari tara ( *Dasypus novemcintus* ). 

Bakin teku a wannan gefen bakin teku suna da mahimmanci wajen samar da kunkuru masu launin kore ( *Chelonia mydas* ). Sauran dabbobi masu rarrafe a yankin sun haɗa da ƙananan dabbobi masu rarrafe waɗanda suka haɗa da ƙadangaren basilisk ( *Basiliscus basiliscus* ), caiman ( *Caiman crocodilus* ), kunkuru mai launin leatherback ( *Dermochelys coriacea* ) da kuma kore iguana (genus *Iguana* ).

## Yankunan da aka kare
Yankunan da aka kare a hukumance a yankin muhallin sun hada da:

* Indio Maiz Biological Reserve
* Barra del Colorado Gudun Gudun namun daji
* Mafakar Dabbobin Dabbobi ta Dr. Archie Carr
* Wurin Shakatawa na Ƙasa na Tortuguero
* Wuraren Dausayi na Ƙasa na Cariari

## Manazarta