Problem:** A science journalist reports that in a biodiversity survey, 81 plant species are found in wetland zones, 55 in forest zones, and 24 in both. Additionally, 12 species are present in only one zone (not both). How many total distinct plant species were recorded across all zones?

["Total Distinct Plant Species in Wetland and Forest Zones: A Clear Breakdown", "Biodiversity surveys offer critical insights into ecosystem health, revealing not just how many species exist, but how they’re distributed across habitats. A recent study on a regional wetland and forest ecosystem uncovered fascinating patterns in plant species distribution, sparking interest in ecological overlap and niche specialization.", "### The Species Distribution Breakdown", "According to the survey:", "- 81 plant species were recorded in wetland zones.\n- 55 plant species were found in forest zones.\n- 24 species occur in both wetlands and forests.\n- Additionally, 12 species are present in only one zone, not both.", "These figures highlight not only overlap but also unique biodiversity in separate habitats. Understanding how species are shared or exclusive across zones is vital for conservation planning and ecosystem management.", "### Calculating Total Distinct Species", "To determine the total number of distinct plant species documented across all zones, we apply principles of set theory and Venn diagram analysis.", "Let’s define:", "- Let W = species in wetland = 81\n- Let F = species in forest = 55\n- The overlap W ∩ F = 24\n- The only one zone species are split between wetlands and forests: 12 total, assumed equally (6 in wetland only, 6 in forest only), since the problem states 12 species exist in only one zone, and no detailed split is given.", "The formula for total distinct species is:", "[\n\ ext{Total} = (W \ ext{ only}) + (F \ ext{ only}) + (Both)\n]", "First, compute W only and F only:", "- Species only in wetlands = Total wetland – both = 81 – 24 = 57\n- Species only in forests = Total forest – both = 55 – 24 = 31\n- Species in both = 24\n- Species only in one zone = 12 (given, consistent with 57 + 31 = 88, but only 12 are singly distributed — this aligns with distinct zone exclusions)", "Since species exclusive to one habitat are already enumerated (57 + 31), and overlap is 24, we now sum all distinct entries:", "[\n\ ext{Total} = (\ ext{Only wetland}) + (\ ext{Only forest}) + (\ ext{Both})\n= 57 + 31 + 24\n]", "[\n\ ext{Total} = 112\n]", "### Why This Matters", "This calculation reveals that despite habitat specialization and shared zones, a total of 112 distinct plant species coexist across the wetland and forest ecosystems. The 12 species found in only one zone emphasize habitat differentiation, while shared species indicate ecological connectivity.", "Conservationists and ecologists rely on such precise data to protect vulnerable species, manage habitats, and maintain biodiversity resilience in the face of environmental change.", "Key takeaway: Effective biodiversity monitoring goes beyond raw counts—contextualizing overlap and exclusivity enables deeper ecological understanding and smarter conservation strategies.", "---", "Keywords: biodiversity survey, plant species count, wetland ecology, forest biodiversity, species overlap, ecological zones, conservation planning, species distribution analysis"]